Player Core
Chapter 8: Playing The Game
Movement
Source Player Core pg. 412
Your movement and position determine how you interact with the world. Moving in exploration and downtime modes is relatively fluid. Movement in encounter mode follows additional rules explained in Tactical Movement. The rules below apply in all modes of play.
Movement Types
Source Player Core pg. 412
The majority of creatures have a Speed, which is how fast they can move across the ground.
There are other ways to move, such as through the air or underground. Each of these special movement types has its own Speed value. Many creatures have these Speeds naturally, such as a barathu having a fly Speed or a kalo having a swim Speed. The various types of movement are listed below. Since the Stride action can be used only with your normal Speed, moving using one of these movement types requires using a special action, and you can't Step while using one of these movement types. Speeds can be increased or decreased with item, circumstance, and status bonuses and penalties. Penalties can't reduce your Speeds below 5 feet unless stated otherwise.
Switching from one movement type to another requires ending your action that has the first movement type and using a new action that has the second movement type. For instance, if you Climbed 10 feet to the top of a cliff, you could then Stride forward 10 feet. In some cases, the GM might rule otherwise, especially if you're moving a very short distance using one of the types of movement.
There are other ways to move, such as through the air or underground. Each of these special movement types has its own Speed value. Many creatures have these Speeds naturally, such as a barathu having a fly Speed or a kalo having a swim Speed. The various types of movement are listed below. Since the Stride action can be used only with your normal Speed, moving using one of these movement types requires using a special action, and you can't Step while using one of these movement types. Speeds can be increased or decreased with item, circumstance, and status bonuses and penalties. Penalties can't reduce your Speeds below 5 feet unless stated otherwise.
Switching from one movement type to another requires ending your action that has the first movement type and using a new action that has the second movement type. For instance, if you Climbed 10 feet to the top of a cliff, you could then Stride forward 10 feet. In some cases, the GM might rule otherwise, especially if you're moving a very short distance using one of the types of movement.
Speed
Source Player Core pg. 412
Most characters and monsters have a Speed statistic that indicates how quickly they can move on a solid surface. This statistic is referred to as land Speed when it's necessary to differentiate it from special Speeds.
When you use the Stride action, you move a number of feet equal to your Speed. Whenever a rule mentions your Speed without specifying a type, it's referring to your land Speed.
Hover: Some creatures, such as barathus, have a land Speed that represents how fast they can move while hovering within 5 feet of a solid surface. Hovering creatures don't count as flying but might be able to avoid certain types of difficult or hazardous terrain, at the GM's discretion.
When you use the Stride action, you move a number of feet equal to your Speed. Whenever a rule mentions your Speed without specifying a type, it's referring to your land Speed.
Hover: Some creatures, such as barathus, have a land Speed that represents how fast they can move while hovering within 5 feet of a solid surface. Hovering creatures don't count as flying but might be able to avoid certain types of difficult or hazardous terrain, at the GM's discretion.
Burrow Speed
Source Player Core pg. 412
A burrow Speed lets you tunnel through solids. You can use the Burrow action if you have a burrow Speed. Burrowing doesn't normally leave behind a tunnel unless the ability specifically states that it does. Most creatures need to hold their breath when burrowing, and they might need tremorsense to navigate.
Climb Speed
Source Player Core pg. 412
A climb Speed allows you to move up or down inclines and vertical surfaces. Most creatures need to succeed at Athletics checks to Climb, but if you have a climb Speed, you automatically succeed and move up to your climb Speed instead of the listed distance.
You might still have to attempt Athletics checks to Climb in hazardous conditions, to Climb extremely difficult surfaces, or to cross horizontal planes such as ceilings. You can also choose to roll an Athletics check to Climb rather than accept an automatic success in hopes of getting a critical success. Your climb Speed grants you a +4 circumstance bonus to Athletics checks to Climb.
If you have a climb Speed, you're not off-guard while you're climbing.
You might still have to attempt Athletics checks to Climb in hazardous conditions, to Climb extremely difficult surfaces, or to cross horizontal planes such as ceilings. You can also choose to roll an Athletics check to Climb rather than accept an automatic success in hopes of getting a critical success. Your climb Speed grants you a +4 circumstance bonus to Athletics checks to Climb.
If you have a climb Speed, you're not off-guard while you're climbing.
Fly Speed
Source Player Core pg. 412
As long as you have a fly Speed, you can use the Fly and Arrest a Fall actions. You can also attempt to Maneuver in Flight if you're trained in the Acrobatics skill.
Wind conditions can affect how you use the Fly action. In general, moving against the wind uses the same rules as moving through difficult terrain (or greater difficult terrain, if you're also flying upward), and moving with the wind allows you to move 10 feet for every 5 feet of movement you spend (not cumulative with moving straight downward). For more information on spending movement, see Tactical Movement.
Upward and downward movement are both relative to the gravity in your area; if you're in zero gravity, moving up or down is no different from moving horizontally.
Wind conditions can affect how you use the Fly action. In general, moving against the wind uses the same rules as moving through difficult terrain (or greater difficult terrain, if you're also flying upward), and moving with the wind allows you to move 10 feet for every 5 feet of movement you spend (not cumulative with moving straight downward). For more information on spending movement, see Tactical Movement.
Upward and downward movement are both relative to the gravity in your area; if you're in zero gravity, moving up or down is no different from moving horizontally.
Swim Speed
Source Player Core pg. 412
With a swim Speed, you can propel yourself through liquids with little impediment. Instead of attempting Athletics checks to Swim, you automatically succeed and move up to your swim Speed instead of the listed distance. Moving up or down is still moving through difficult terrain.
You might still have to attempt checks to Swim in hazardous conditions or to cross turbulent water. You can also choose to roll an Athletics check to Swim rather than accept an automatic success in hopes of getting a critical success. Your swim Speed grants you a +4 circumstance bonus to Athletics checks to Swim.
Having a swim Speed doesn't necessarily mean you can breathe in water, so you might still have to hold your breath if you're underwater to avoid drowning.
You might still have to attempt checks to Swim in hazardous conditions or to cross turbulent water. You can also choose to roll an Athletics check to Swim rather than accept an automatic success in hopes of getting a critical success. Your swim Speed grants you a +4 circumstance bonus to Athletics checks to Swim.
Having a swim Speed doesn't necessarily mean you can breathe in water, so you might still have to hold your breath if you're underwater to avoid drowning.
Falling
Source Player Core pg. 413
If you fall more than 5 feet, when you land you take bludgeoning damage equal to half the distance you fell. Treat falls longer than 1,500 feet as though they were 1,500 feet (750 damage). If you take any damage from a fall, you land prone. You fall about 500 feet in the first round of falling and about 1,500 feet each round thereafter.
You can Grab an Edge as a reaction to reduce the damage from some falls, or Arrest a Fall if you have a fly Speed. In addition, if you fall into water, snow, or another relatively soft substance, you can treat the fall as though it were 20 feet shorter, or 30 feet shorter if you intentionally dove in. The effective reduction can't be greater than the depth (so when falling into 10-foot-deep water, you treat the fall as 10 feet shorter).
You can Grab an Edge as a reaction to reduce the damage from some falls, or Arrest a Fall if you have a fly Speed. In addition, if you fall into water, snow, or another relatively soft substance, you can treat the fall as though it were 20 feet shorter, or 30 feet shorter if you intentionally dove in. The effective reduction can't be greater than the depth (so when falling into 10-foot-deep water, you treat the fall as 10 feet shorter).
Falling on a Creature
Source Player Core pg. 413
If you land on a creature, that creature must attempt a DC 15 Reflex save. Intentionally aiming yourself to land on a creature after a long fall is almost impossible.
Critical SuccessThe creature takes no damage.
SuccessThe creature takes bludgeoning damage equal to one-quarter the falling damage you took.
FailureThe creature takes bludgeoning damage equal to half the falling damage you took.
Critical FailureThe creature takes the same amount of bludgeoning damage you took from the fall.
Falling Objects
Source Player Core pg. 413
A dropped object takes damage just like a falling creature. If the object lands on a creature, that creature can attempt a Reflex save using the same rules as for a creature falling on a creature. Hazards and spells that involve falling objects, such as a rock slide, have their own rules about how they interact with creatures and the damage they deal.
Tactical Movement
Source Player Core pg. 413
Your movement during encounter mode—and at other times where precise movement matters—depends on the actions and other abilities you use. Whether you Stride, Step, Swim, or Climb, the maximum distance you can move is based on your Speed. Certain augmentations, feats, or items can grant you other movement types, allowing you to swiftly burrow, climb, fly, or swim. Some abilities have the traversal trait, allowing you to substitute other forms of movement you have in place of the ability's Stride actions.
When the rules refer to a “movement cost” or “spending movement,” they're describing how many feet of your Speed you must use to move from one point to another. Normally, movement costs the number of feet you're moving. However, sometimes it's harder to move a certain distance due to difficult terrain or other factors. In such a case, you might have to spend a different amount of movement to move from one place to another.
When the rules refer to a “movement cost” or “spending movement,” they're describing how many feet of your Speed you must use to move from one point to another. Normally, movement costs the number of feet you're moving. However, sometimes it's harder to move a certain distance due to difficult terrain or other factors. In such a case, you might have to spend a different amount of movement to move from one place to another.
Grid Movement
Source Player Core pg. 413
If an encounter involves combat, it's often a good idea to track the movement and relative position of the participants using a Starfinder Flip-Mat or some other form of grid to display the terrain and miniatures to represent the combatants. When a character moves on a grid, every 1-inch square of the play area is 5 feet across in the game world. Hence, a creature moving in a straight line spends 5 feet of its movement for every map square traveled. Difficult terrain can make some squares cost more of your movement.
Iseph Seeks, and a control panel catches their eye to the north, so they decide to move toward it. They spend 5 feet of their Speed to head east. However, the debris is difficult terrain, so each dotted square costs 5 more feet of Speed. Iseph moves diagonally, spending 10 feet of movement since this is an odd-numbered diagonal. They want to move northeast again, but that would cost them 15 feet (10 feet for an even-numbered diagonal and 5 more for being difficult terrain). Instead, Iseph decides to move directly north. This costs them 10 feet, so they've used all 25 feet of their Speed and are out of actions.
Diagonal Movement
Source Player Core pg. 413
Because moving diagonally covers more ground, you count that movement differently. The first square of diagonal movement you make in a turn counts as 5 feet, but the second counts as 10 feet, and your count thereafter alternates between the two. For example, as you move across 4 squares diagonally, you would count 5 feet, then 10, then 5, and then 10, for a total of 30 feet. You track your total diagonal movement across all your movement during your turn, but reset your count at the end of your turn. The diagram in the sidebar below shows an example.
3D Movement
Source Player Core pg. 413
Most movement in a game can be represented on a flat map. If creatures are flying, swimming, or otherwise moving through three-dimensional space, see the advice in the sidebar under Aerial Combat.
Size, Space, and Reach
Source Player Core pg. 413
Creatures and objects of different sizes occupy different amounts of space. The sizes and the spaces they each take up on a grid are listed in the Size and Reach table (see below). The table also lists the typical reach for creatures of each size, for both tall creatures (most bipeds) and long creatures (most quadrupeds). See Range and Reach for more about reach.
The Space entry lists how many feet on a side a creature's space is, so a Large creature fills a 10-foot-by-10-foot space, or 4 squares on the grid. (If you need to measure in three dimensions, their space is also 10 feet high.) Sometimes part of a creature extends beyond its space, such as if a sky fisher is grabbing you with its lasso filaments. In that case, the GM will usually allow attacking the extended portion, even if you can't reach the main creature.
A Small or larger creature or object takes up at least 1 square on a grid, and creatures of these sizes can't usually share spaces except in situations like a character riding a mount.
Multiple Tiny creatures can occupy the same square. At least four can fit in a single square, though the GM might determine that even more can fit. Tiny creatures can share a space occupied by a larger creature as well. If a Tiny creature's reach is 0 feet, it must share a space with a creature in order to attack it.
The Space entry lists how many feet on a side a creature's space is, so a Large creature fills a 10-foot-by-10-foot space, or 4 squares on the grid. (If you need to measure in three dimensions, their space is also 10 feet high.) Sometimes part of a creature extends beyond its space, such as if a sky fisher is grabbing you with its lasso filaments. In that case, the GM will usually allow attacking the extended portion, even if you can't reach the main creature.
A Small or larger creature or object takes up at least 1 square on a grid, and creatures of these sizes can't usually share spaces except in situations like a character riding a mount.
Multiple Tiny creatures can occupy the same square. At least four can fit in a single square, though the GM might determine that even more can fit. Tiny creatures can share a space occupied by a larger creature as well. If a Tiny creature's reach is 0 feet, it must share a space with a creature in order to attack it.
Size and Reach
| Size | Space | Reach (Tall) | Reach (Long) |
|---|---|---|---|
| Tiny | Less than 5 feet | 0 feet | 0 feet |
| Small | 5 feet | 5 feet | 5 feet |
| Medium | 5 feet | 5 feet | 5 feet |
| Large | 10 feet | 10 feet | 5 feet |
| Huge | 15 feet | 15 feet | 10 feet |
| Gargantuan | 20 feet or more | 20 feet | 15 feet |
Moving Through a Creature's Space
Source Player Core pg. 414
You can move through the space of a willing creature. If you want to move through an unwilling creature's space, you can Tumble Through it. You can't end your turn in a square occupied by another creature, though you can end a move action in its square provided that you immediately use another move action to leave that square. If two creatures end up in the same square by accident, the GM determines which one is forced out of the square (or whether one falls prone).
Prone and Incapacitated Creatures
Source Player Core pg. 414
You can share a space with a prone creature if that creature is willing, unconscious, or dead and if it's your size or smaller. The GM might allow you to climb atop the corpse or unconscious body of a larger creature in some situations. A prone creature can't stand up while someone else occupies its space, but it can Crawl to a space where it's able to stand, or it can attempt to Shove the other creature out of the way.
Creatures of Different Sizes
Source Player Core pg. 414
In most cases, you can move through the space of a creature three sizes larger than you or larger. This means a Medium creature can move through the space of a Gargantuan creature and a Small creature can move through the space of a Huge or Gargantuan creature. Likewise, a bigger creature can move through the space of a creature three sizes smaller than itself or smaller. You still can't end your movement in a space occupied by a creature.
Tiny creatures are an exception, just like with sharing a space. They can move through creatures' spaces and can even end their movement there. Similarly, other creatures can move through and end their movement in a Tiny creature's space.
Tiny creatures are an exception, just like with sharing a space. They can move through creatures' spaces and can even end their movement there. Similarly, other creatures can move through and end their movement in a Tiny creature's space.
Objects
Source Player Core pg. 414
Because objects aren't as mobile as creatures are, they're more likely to fill a space. This means you can't always move through their spaces like you might move through a space occupied by a creature. You might be able to occupy the same square as a statue of your size, but not a wide column. The GM determines whether you can move into an object's square normally, whether special rules apply, or if you're unable to move into the square at all.
Forced Movement
Source Player Core pg. 414
When an effect forces you to move, or if you start falling, the distance you move is defined by the effect that moved you, not by your Speed. Forced movement doesn't trigger reactions that are triggered by movement. Some common causes of forced movement include the Reposition and Shove actions of Athletics or the solarian's Stellar Rush feat. In the rare cases where it's unclear whether your movement is voluntary or forced, the GM makes the determination.
If forced movement would move you into a space you can't occupy—because objects are in the way or because you lack the movement type needed to reach it, for example— you stop moving in the last space you can occupy.
Usually the creature or effect forcing the movement chooses the path the victim takes. If you're pushed or pulled, you can usually be moved through hazardous terrain, pushed out of an airlock, or the like. Abilities that reposition you in some other way can't put you in such dangerous places unless they specify otherwise. In all cases, the GM makes the final call if there's doubt on where forced movement can move a creature.
Some abilities allow a creature to move while carrying another along with it. This is forced movement for the carried creature. Unless noted otherwise, they both move on the same path while this happens—the carrying creature can't drag its victim through dangers while avoiding them itself, for example.
If forced movement would move you into a space you can't occupy—because objects are in the way or because you lack the movement type needed to reach it, for example— you stop moving in the last space you can occupy.
Usually the creature or effect forcing the movement chooses the path the victim takes. If you're pushed or pulled, you can usually be moved through hazardous terrain, pushed out of an airlock, or the like. Abilities that reposition you in some other way can't put you in such dangerous places unless they specify otherwise. In all cases, the GM makes the final call if there's doubt on where forced movement can move a creature.
Some abilities allow a creature to move while carrying another along with it. This is forced movement for the carried creature. Unless noted otherwise, they both move on the same path while this happens—the carrying creature can't drag its victim through dangers while avoiding them itself, for example.
Terrain
Source Player Core pg. 415
Several types of terrain can complicate your movement by slowing you down, damaging you, or endangering you. Navigating these types of terrain can be challenging, but it can also let you get an advantage over your foes.
Difficult Terrain
Source Player Core pg. 415
Difficult terrain is any terrain that impedes your movement, ranging from particularly rough or unstable surfaces to thick ground cover and countless other impediments. Moving into a square of difficult terrain (or moving 5 feet into or within an area of difficult terrain, if you're not using a grid) costs an extra 5 feet of movement. Moving into a square of greater difficult terrain instead costs 10 additional feet of movement. This additional cost isn't increased further when moving diagonally. You can't Step into difficult terrain.
Movement you make while jumping ignores the terrain you're jumping over. Some abilities (such as flight or being incorporeal) allow you to avoid the movement reduction from some types of difficult terrain.
Movement you make while jumping ignores the terrain you're jumping over. Some abilities (such as flight or being incorporeal) allow you to avoid the movement reduction from some types of difficult terrain.
Ignore Difficult Terrain
Source Player Core pg. 415
Certain abilities let you ignore difficult terrain. If you can ignore difficult terrain, you can also move through greater difficult terrain at the extra movement cost difficult terrain normally imposes. An ability doesn't let you entirely ignore greater difficult terrain unless the ability specifies otherwise.
Hazardous Terrain
Source Player Core pg. 415
Hazardous terrain damages you whenever you move through it. An industrial acid vat, a pit of molten slag, and a field of razor-sharp grass on a strange planet are all examples of hazardous terrain. The amount and type of damage depend on the specific hazardous terrain.
Narrow Surfaces
Source Player Core pg. 415
A narrow surface is so precariously thin that you need to Balance or risk falling. Even on a success, you're off-guard on a narrow surface. Each time you are hit by an attack or fail a save on a narrow surface, you must succeed at a Reflex save (with the same DC as the Acrobatics check to Balance) or fall.
Uneven Ground
Source Player Core pg. 415
Uneven ground is an area unsteady enough that you need to Balance or risk falling prone and possibly injuring yourself, depending on the specifics of the uneven ground. You're off-guard on uneven ground. Each time you are hit by an attack or fail a save on uneven ground, you must succeed at a Reflex save (with the same DC as the Acrobatics check to Balance) or fall prone.
Inclines
Source Player Core pg. 415
Cover
Source Player Core pg. 416
When you're behind an obstacle that could block weapons, guard you against explosions, and make you harder to detect, you're behind cover. Standard cover gives you a +2 circumstance bonus to AC, to Reflex saves against area effects, and to Stealth checks to Hide, Sneak, or otherwise avoid detection. You can increase this to greater cover using the Take Cover basic action, increasing the circumstance bonus to +4. If cover is especially light, typically when it's provided by a creature, you have lesser cover, which grants a +1 circumstance bonus to AC. A creature with standard cover or greater cover can attempt to use Stealth to Hide, but lesser cover isn't sufficient.
Cover is relative, so you might simultaneously have cover against one creature and not another. Cover applies only if your path to the target is partially blocked. If a creature is entirely behind a wall or the like, you don't have line of effect and typically can't target it at all.
Usually, the GM can quickly decide whether your target has cover. If you're uncertain or need to be more precise, draw a line from the center of your space to the center of the target's space. If that line passes through any terrain or object that would block the effect, the target has standard cover (or greater cover if the obstruction is extreme or the target has Taken Cover). If the line passes through a creature instead, the target has lesser cover. When measuring cover against an area effect, draw the line from the effect's point of origin to the center of the creature's space. See the diagram for examples.
Cover is relative, so you might simultaneously have cover against one creature and not another. Cover applies only if your path to the target is partially blocked. If a creature is entirely behind a wall or the like, you don't have line of effect and typically can't target it at all.
Usually, the GM can quickly decide whether your target has cover. If you're uncertain or need to be more precise, draw a line from the center of your space to the center of the target's space. If that line passes through any terrain or object that would block the effect, the target has standard cover (or greater cover if the obstruction is extreme or the target has Taken Cover). If the line passes through a creature instead, the target has lesser cover. When measuring cover against an area effect, draw the line from the effect's point of origin to the center of the creature's space. See the diagram for examples.
- Dae and the tashtari don't have any cover from one another. The line from the center of Dae's space to the center of the tashtari's space doesn't pass through blocking terrain or other creatures.
- The tashtari and Chk Chk have lesser cover from one another. The line between the centers of their spaces doesn't pass through any blocking terrain, but does pass through Dae's space.
- The tashtari and Iseph have cover from one another. The line between the centers of their spaces crosses blocking terrain.
- Navasi and the tashtari can barely see one another, but have cover from one another because the line between the centers of their spaces goes through blocking terrain. Because there's so much blocking terrain in the way, the GM will likely rule this is greater cover.
Cover and Large Creatures
Source Player Core pg. 416
If a creature between you and a target is two or more sizes larger than both you and your target, that creature's space blocks the effect enough to provide standard cover instead of lesser cover. The GM might determine that a creature doesn't gain cover from terrain that it's significantly larger than. For example, a Huge robot probably wouldn't receive any benefit from being behind a 1-foot-wide pillar.
Special Circumstances
Source Player Core pg. 416
Your GM might allow you to overcome your target's cover in some situations. If you're right next to a narrow window, you can shoot without penalty, but you have greater cover against someone shooting back at you from far away. Your GM might let you reduce or negate cover by leaning around a corner to shoot or the like. This usually takes an action to set up, and the GM might measure cover from an edge or corner of your space instead of your center.
| Type of Cover | Bonus | Can Hide |
|---|---|---|
| Lesser | +1 to AC | No |
| Standard | +2 to AC, Reflex, Stealth | Yes |
| Greater | +4 to AC, Reflex, Stealth | Yes |
Flanking
Source Player Core pg. 417
When you and an ally are flanking a foe, it has a harder time defending against you. A creature is off-guard (taking a –2 circumstance penalty to AC) to melee attacks from creatures that are flanking it.
To flank a foe, you and your ally must be on opposite sides of the creature. A line drawn between the center of your space and the center of your ally's space must pass through opposite sides or opposite corners of the foe's space. Additionally, both you and the ally have to be able to act, you must be wielding melee weapons or be able to make an unarmed attack, you can't be under any effects that prevent you from attacking, and you must both have the enemy within reach. If you're wielding a reach weapon, you use your reach with that weapon for this purpose.
To flank a foe, you and your ally must be on opposite sides of the creature. A line drawn between the center of your space and the center of your ally's space must pass through opposite sides or opposite corners of the foe's space. Additionally, both you and the ally have to be able to act, you must be wielding melee weapons or be able to make an unarmed attack, you can't be under any effects that prevent you from attacking, and you must both have the enemy within reach. If you're wielding a reach weapon, you use your reach with that weapon for this purpose.
- Chk Chk and Dae are flanking the tashtari alpha because they can draw a line to each other that passes through opposite sides of the tashtari's space. The tashtari is off-guard to them, taking a –2 circumstance penalty to its AC.
- Obozaya isn't flanking the tashtari alpha because she can't draw a line to Chk Chk or Dae that passes through opposite sides of its space, and the tashtari alpha isn't in Navasi's reach.
- The tashtari and the tashtari alpha flank Navasi since she's within reach for both, and they can draw a line between them that passes through opposite sides of her space. If the tashtari alpha didn't have 10 feet of reach, the two creatures wouldn't flank her.
3D Flanking
Source Player Core pg. 417
Though battle grids are often two-dimensional, the game world isn't! Sometimes you might need to visualize a creature's space as a cube for flanking. For instance, if Dae is positioned underneath a flying cloud ray while Navasi is flying above the cloud ray using her ultralight wings, they might be flanking it even if they're piled in an odd stack on your battle grid. And if Dae were riding an enercycle, they might be able to measure from farther off the ground than normal.
In these cases, it's usually best to have the GM make the call on who's flanking rather than trying to do meticulous measurements in three dimensions.
In these cases, it's usually best to have the GM make the call on who's flanking rather than trying to do meticulous measurements in three dimensions.