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Chapter 8: Tactical Rules / Vehicle Chases

Phases of a Vehicle Chase

Source Starfinder Core Rulebook pg. 282
Chases happen in rounds with three phases, which are described in more detail below. At the start of a chase, roll initiative checks (or use the same initiative order if a grid-based vehicle combat transitioned into a chase).

1. Pilot Actions: Each vehicle’s pilot selects her pilot actions and attempts any needed checks outside the normal character initiative count.

2. Chase Progress: The GM moves the vehicles to their new zones, based on the actions the pilots chose and whether they were successful. The GM also determines whether anyone is out of range of other vehicles, and therefore out of the chase.

3. Combat: Pilots (if they have any remaining actions) and passengers take their actions in initiative order as they normally would in a combat. Passengers and pilots can fire on other vehicles, depending on their range, and pilots might be able to slam their vehicles into those of their enemies.

Pilot Actions

During the pilot actions phase, the pilot of each vehicle selects any pilot actions she wants to use to drive her vehicle this round, and performs her piloting actions in initiative order during this phase. Most pilot actions require a move action; taking two pilot actions requires the double maneuver pilot action, which is a full action. Only the speed up action advances vehicles during this phase. For all other pilot actions, the GM advances vehicles as appropriate during the chase progress step. If the pilots have any actions remaining at the end of the pilot actions phase, they can take them in initiative order during the combat phase. The below table offers a quick reference for the pilot actions.

Pilot Action	Skill Check	DC	Result of Success
Break free	Piloting	5 + enemy vehicle’s KAC	End vehicle engagement (and move 1 zone forward in chase progress phase)
Double maneuver*	Varies	Special (each at a -4 penalty)	Special-see page 283 (and vehicle moves 1 zone forward in chase progress phase)
Engage another vehicle	Piloting	Enemy vehicle’s KAC	Vehicle’s riders can attack one another or board another vehicle (and vehicle moves 1 zone forward in chase progress phase)
Evade	Piloting	10 + vehicle's item level	Vehicle gains a +2 bonus to its AC (and moves 1 zone forward in chase progress phase)
Keep pace	Piloting	10 + vehicle's item level	Vehicle moves 1 zone forward in chase progress phase
Slow down	None	None	Vehicle doesn’t move forward in chase progress phase
Speed up	Piloting	17 + vehicle's item level	Move 1 zone forward immediately (and move 1 zone forward in chase progress phase)
Trick	Varies (see page 283)	15 + vehicle's item level	Pilots behind you take -2 penalty to Piloting checks for 1 round (and vehicle moves 1 zone forward in chase progress phase)

* A double maneuver is a full action that allows a pilot to take any two of the other actions listed in this table.

Break Free (Move)

You attempt a Piloting check (DC = 5 + the enemy vehicle’s KAC) to disengage from an engagement with other vehicles. If the engagement includes multiple enemy vehicles, the DC equals the highest KAC among the enemy vehicles + 5 per enemy vehicle beyond the first. If all parties are willing to end the engagement, no Piloting check is required to break free.

Engage Another Vehicle (Move)

You attempt a Piloting check (DC = the KAC of the enemy vehicle) to engage your vehicle with an enemy vehicle in the same zone. Two allied vehicles can engage freely; this is useful to allow people on one vehicle to board the other. In both cases, your vehicle then automatically becomes engaged with all other vehicles in the engagement. You can make melee attacks against those on another vehicle only if your vehicle is engaged with it; see the Engagement sidebar on page 284 for more information.

Evade (Move)

You can attempt a Piloting check (DC = 10 + your vehicle’s item level) to grant your vehicle a +2 circumstance bonus to its AC for 1 round. If you evade twice, the bonuses aren’t cumulative.

Keep Pace (Move)

You attempt a Piloting check (DC = 10 + your vehicle’s item level) to stay in the same position in the chase. If you’re successful, your vehicle moves forward during the chase progress phase. If you fail, your vehicle falls back one zone during that phase. Many other pilot actions can also result in a vehicle moving forward one zone during the chase progress phase, but they have a higher DC, increasing the chance the pilot will fail.

Slow Down (Move)

Your vehicle doesn’t move during the chase progress phase. This pilot action doesn’t require a check.

Speed Up (Move)

You attempt a Piloting check (DC = 17 + your vehicle’s item level) to get ahead, moving forward one zone immediately on a success. If the vehicle encounters any hazards or similar effects that occur upon entering a zone (see page 285), they trigger immediately. The vehicle later moves forward one additional zone in the chase progress phase, even on a failed check, unless you failed the check by 5 or more.

Trick (Move)

You can try a risky maneuver, use the terrain, or take an unconventional route to foil pursuers. You attempt a skill check (DC = 15 + your vehicle’s item level); this skill check could be a Piloting check if the ploy requires intricate maneuvering, but it might instead be a Bluff, Stealth, or other skill check at the GM’s discretion. If you succeed, the Piloting checks of all vehicles behind you take a –2 penalty for 1 round. You can attempt multiple tricks with the double maneuver action, but the penalties imposed on the vehicles behind you aren’t cumulative. Penalties from multiple different pilots who are ahead and successfully perform tricks, however, are cumulative.

Double Maneuver (Full)

You can take two of the aforementioned pilot actions, but take a –4 penalty to each Piloting check or other skill check. You take the pilot actions in succession, but can choose your second action after taking the first one and can take an action more than once. If you don’t want to use your second action, you forfeit it but still take the penalty to your first check. Unlike other pilot actions, a double maneuver takes your full action.

If your vehicle is significantly faster than the other vehicles in the chase, you have an advantage when performing a double maneuver. If your vehicle’s full speed is at least 50 feet faster than the fastest enemy vehicle, you take only a –2 penalty when performing a double maneuver.

Regardless of how many pilot actions you take as part of a double maneuver, you move forward at most one zone during the chase progress phase.

Chase Progress

In the chase progress phase, the GM advances vehicles (based on their pilots’ chosen actions and whether they succeeded at the required checks), then determines whether any participants have escaped or been left behind and whether the chase is over.

Engagement: Vehicles in the same zone as one another can become engaged, meaning they’re neck-and-neck and within physical striking distance of one another. If two or more vehicles are engaged, move their miniatures or tokens next to one another. The vehicles’ passengers and pilots can make melee attacks against each other in the combat phase or attempt to board the other vehicle. An engaged vehicle can’t speed up, slow down, engage another enemy, or end the engagement unless it takes the break free action (see page 282).

Advance Vehicles

The GM moves forward by one zone all vehicles whose pilots succeeded at a minimum of one required check. If a vehicle’s pilot deliberately slowed down or she failed all the Piloting checks attempted, her vehicle doesn’t move forward. If a pilot attempted to keep pace and failed, her vehicle instead moves back one zone. If a pilot attempted to speed up and failed by less than 5, her vehicle still moves forward one zone now. Because a pilot has to fail all checks to stay put, a pilot who tried to speed up twice would stay put only if she failed both checks by 5 or more. The slow down action supersedes the forward movement from other successful Piloting checks, so if the pilot succeeded at the evade and slow down actions, she’d get the bonus to her vehicle’s AC but wouldn’t move forward. Treat uncontrolled vehicles as if their pilots had failed all Piloting checks.

If a vehicle is engaged with another and fails all its checks, it still moves forward along with another engaged vehicle, provided that vehicle would be advanced by the GM. However, the opposing vehicle gains all bonuses from being a zone ahead (even though it’s in the same zone). If all the vehicles in an engagement fail all their checks, none move.

Hazards and other effects of moving into a zone trigger immediately (see Chase Environments on page 285 for more information, since sometimes environments can prompt specific hazards in a relevant zone).

Escaping and Getting Left Behind

You leave a chase if you escape or get left behind. During the chase progress phase, you escape if you end up two zones ahead of all adversaries, and you get left behind if you end up two zones behind.

If you would escape from a chase but don’t want to do so, you can voluntarily move back to being only one zone ahead in the chase progress phase.

It’s possible for you to rejoin a chase if you’ve been left behind (or if you already escaped and want to later support allies with an ambush), but it requires extraordinary circumstances and happens at the GM’s discretion.

As an example, suppose the PCs are in an exploration buggy fleeing from a police cruiser, and are one zone ahead of the pursuing police cruiser. During the pilot actions phase, the PC pilot succeeds at a Piloting check to speed up, immediately moving the buggy an additional zone ahead, which brings it two zones ahead of the police cruiser. The officer piloting the police cruiser tries to speed up and catch the PCs, but he fails his Piloting check, so the police cruiser remains in its zone. During the chase progress phase, both vehicles move forward one zone, but because the PCs are still two zones ahead, they escape and leave the chase.

In this example, the PCS escaping and the police getting left behind have the same end result. But what if there were two police cruisers, and one succeeded at its check to speed up but the other didn’t? The cruiser that succeeded would end up one zone behind the PCs, and the one that failed would be two zones behind. The second cruiser would leave the chase, but the PCs wouldn’t escape because their buggy isn’t two zones ahead of all pursuers.

Ending a Chase

If either all enemies or you and your allies have escaped or been left behind, the chase is over. It’s possible for one group to escape by dropping back until it’s left behind, but it’s easy for the other chase participants to circle back and pick off the group while it’s a sitting duck.

Combat

The final phase of each round is combat. This happens in initiative order, and characters can take the usual actions they can in combat, with the following adjustments. Pilots can also act during the combat phase, as long as they have any actions remaining to spend. Because of the motion involved in a chase, all attacks take the penalty listed in the vehicle’s Modifiers entry. However, because the vehicles are all moving at high speed, the differences in speed cancel out somewhat, so combatants take the normal penalty instead of the higher penalty for full speed.

Ranged Attacks

Passengers on and pilots of vehicles can attempt ranged attacks against other vehicles or their passengers in the same zone or one zone away. Unless otherwise specified, these ranged attacks follow the normal rules for attacking from vehicles (see page 281). To determine the range between two vehicles, see Relative Positioning on page 282.

As a passenger, you can attack with your ranged weapons or abilities. If you’re a gunner, you can attack with the vehicle’s mounted weapons, as described in Firing Vehicle Weapons on page 281. As a pilot, you can attack only if you have a standard action left and can make a full attack only if you left the vehicle uncontrolled in the pilot actions phase.

Passengers can attack an enemy vehicle directly, but targeting riders or pilots can be difficult. Vehicles (except for entirely open vehicles) usually grant their passengers some degree of cover (see page 228).

Due to high speeds, wind, and other factors that may or may not be part of the environment (see Chase Environments on page 285), some weapons might not work effectively during a chase. For example, it’s nearly impossible to throw a grenade from one vehicle to another while moving at high speeds. The GM has final say on what can and can’t be used during a chase and the penalties incurred for difficult attacks.

Melee Attacks

Anyone in a vehicle can make melee attacks against those on an enemy vehicle with which their own vehicle is engaged. You can make melee attacks against those in an enemy vehicle only with reach weapons, and such targets typically have some cover provided by their vehicle. Even when your vehicles are engaged and you’re using a reach weapon, you do not threaten any squares of the other vehicle.

Boarding

If two vehicles are engaged and you are a passenger, you can attempt to move from one vehicle to the other as a move action that provokes attacks of opportunity. This is like boarding a vehicle in normal combat, but it also requires a successful Acrobatics or Athletics check with a DC equal to 5 + the KAC of the vehicle you’re boarding. Failure by less than 5 means that you are unable to board the other vehicle and remain on your vehicle. If you fail by 5 or more, you fall from the vehicle and land prone. You take double the normal falling damage for the distance of your fall or 1d6 falling damage if you fall less than 10 feet. Once you have boarded an enemy vehicle, you take the attack penalty from that vehicle, not your former one.

Collisions

When piloting a vehicle, you can attempt a Piloting check (DC = the enemy vehicle’s KAC) as a standard action to smash into another vehicle you’re engaged with. If you’re successful, your vehicle deals its collision damage to the enemy vehicle, and takes half that much damage itself. A vehicle’s collision damage is listed in the Attack (Collision) entry of its statistics (see page 228).

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