Input Chaos

Input Chaos is a physics-based fighting game where you control an active-ragdoll robot. Perform backflips, break opponents’ parts and use guns with explosive ammunition to win rounds. Combat rewards spatial coordination and quick reflexes: there are no combo lists or hidden button combinations to learn, so you can challenge an experienced player from your first round.

Combat and stamina

Use the right joystick and bumpers to punch. The bumpers select your left arm, right arm or both, while your arms follow the joystick’s direction. Melee damage, including damage from kicks and headbutts, depends on velocity. Your arms default to a guard position that blocks health damage.

Your robot stands and moves through applied forces, with stamina determining how much force it can use. Damage reduces stamina and weakens your movement and attacks; near zero stamina, the robot crumples to the ground. Stamina recovers automatically unless your health reaches zero, which ends the fight.

Weapons and arenas

Weapons can spawn in arenas. Use the second range of bumpers to attract and grab them, choosing the left arm, right arm or both. Once equipped, melee weapons use the same joystick-and-bumper controls as punches. With a gun in your right hand, press the right bumper to fire and aim with the joystick.

Available weapons include:

• Laser Gun
• Blast Gun
• Laser Cutter
• Laser Sword
• Sword
• Flail One Head
• Flail Two Heads
• Flail Three Heads
• Lash
• Shield, which can bounce gunfire
• Nunchaku

Battles take place in four arenas, each with a ring-out zone where players cannot linger:

• Hot World: players melt in lava.
• Old World: a giant press compacts players; jump to escape it.
• Outer World: giant gears dismantle players piece by piece.
• Meta World: players are teleported back into action.

You can customize arena boundaries or play without them. Chain boundaries can take damage and then float without gravity, adding a wrestling-style setting. Laser boundaries propel players upward with sparks if they touch them, while Field boundaries are transparent walls that contain players safely, though they can be jumped over and are difficult to get back across.

A LaserGrid trap drops beams from above to cut players into pieces. It alternates with the Saw trap, in which circular saws race across the ground and destroy whatever is in their path.

Robot customization

Before a fight, you can customize each part of your robot, affecting its combat stats:

• Health Damage: maximum health damage dealt in melee.
• Stamina Damage: maximum stamina damage dealt in melee.
• Break Damage: the chance of breaking an opponent’s parts with melee damage.
• Attractor: the force used to draw available weapons toward you; weapons tend to go to the player with the higher stat.
• Speed: how fast you can run.
• Stamina Recovery: how quickly your stamina recovers.

Multiplayer and practice

Local multiplayer supports up to four participants, and online multiplayer is available through Steam Remote Play. You can form teams of two or three players, whose robots share a color. Practice mode lets you train, and you can also play alone against bots.