In Falsus Controls, Keybinds and Controller Support

Default layout

Keys can be rebound in the settings. Mouse buttons cannot be bound, which several Steam reviewers and the Japanese community wiki both point out.

Where your fingers go

Four middle lanes and two side lanes do not map neatly onto five fingers. The in-game prompt suggests resting the pinky on the left side lane with the other fingers just to its right, and players who have studied it read that as a starting position, not a fixed one: you are expected to slide the three middle fingers left or right as the chart moves, much as you move your hand up the neck in Guitar Hero.

The charts are built around that. On EVO, only three of the four middle lanes are active at a time, and the active set shifts during the song; the community wiki recommends moving your three middle fingers with it. ULT and FBD use all six lanes, so you will be moving constantly.

Alternatives that players use

• Right-handed layout. The Japanese wiki suggests putting the lanes on the right hand, for example Space, K, L, ;, : and Right Shift, and moving the mouse with your left hand. There is also a Flipped Gameplay setting that mirrors which side lane and middle lanes are used on MIN.
• Ergonomic and split keyboards. A Steam forum thread shares an alternative layout for split keyboards without mouse buttons.
• Keypads and programmable keyboards. Small 6×2 or 6×4 pads let you put six keys exactly where your fingers want them.
• Mouse buttons as keys through software. Your mouse software can send a key press from a mouse button. This splits the load across both hands, but it changes how the side lanes feel.

Keyboard problems that look like skill problems

• Holds on A and D cancelling each other. A Steam thread traced this to SOCD (snap tap) settings on gaming keyboards, which let only one of two opposite keys register. Turn it off for A and D.
• Chords not registering on a laptop. Many membrane and laptop keyboards cannot register several keys at once. Try other keys (one player had better luck with Q, W, E, R than A, S, D, F), or use an external keyboard.
• You never need all six keys at once. Wide notes on FBD accept any one of the keys they cover.

Mouse settings

• One player found that an 8,000 Hz polling rate caused frame drops that disappeared at 1,000 Hz.
• A laptop touchpad works for the Field, but a player reported it going unresponsive for about a second after a pause.

Controllers

There is no official controller support: Steam shows none, and Steam will warn that the game does not support your controller. Players still use:

• Steam Input, mapping the stick or gyro to mouse movement and six buttons to the lanes.
• Sound Voltex-style controllers, whose knobs act as a mouse and whose six buttons match the six lanes. The Japanese wiki notes that lane layout and button size still take getting used to.
• Other arcade and rhythm controllers, with mixed results.

The Japanese wiki also cautions that devices the game was not designed for could be seen as cheating in competitive settings. There is no rule from lowiro on this, so use them at your own discretion.

Audio

The game supports ASIO, which several reviewers call rare for a PC rhythm game. If you get no sound at all, the fix reported on the Steam forum is to change the audio buffer size in the advanced audio settings.

Related: Steam Deck and platforms · known issues · beginner guide

Sources: Miraheze and wikiwiki community wiki control pages, Steam forum threads on keybinds, SOCD and polling rate, Steam user reviews, and a player analysis video of the in-game hand placement guide, read 10 September 2026.