UnboundVR
SteamVR treadmill compatibility

More Games. More Ground.

UnboundVR turns treadmill movement into SteamVR playspace movement. The goal is simple: use your KAT in games that never added KAT support.

Set up UnboundVRPreview control app
Beyond native KAT supportPer-game profilesNatural MotionSame PC or cloud PC
KAT GatewayTreadmill input
UnboundVRLocomotion layer
SteamVRPlayspace movement
Walking stays off until Unbound Guard verifies KAT's native movement is out of the way
Current build
v0.19
Natural Motion locomotion core
Runtime status

Core built, hardware acceptance pending

KAT input, safety state, profiles, Natural Motion shaping, account/device ownership, and the control server are built. Real SteamVR playspace output is still being restored and physically validated.
New here?
Start simple
The guided setup page keeps ports, OSC, and driver details out of the way unless something actually fails.
v0.19 adds Natural Motion: body/controller/head direction handling, look-around steering resistance, gradual acceleration, faster braking, start/stop hysteresis, run detection, separate strafe/backward response, bounded neutral/gait calibration, and a privacy-safe motion trace for “that felt wrong” debugging. Manual direction, smoothing, stride, inversion and axis controls remain authoritative. Live SteamVR movement still stays off until the real hardware output/ownership path is verified.
How it works

Move the playspace. Skip the game-by-game support.

1 · Read the treadmill

UnboundVR reads KAT movement, loads the game profile, and shapes starts, stops, strafing and gait without taking away manual tuning.

2 · Know which way you're walking

Natural Motion can prefer body direction and fall back to controller or head cues, while resisting ordinary look-around steering. Manual direction modes still override it.

3 · Move SteamVR safely

Before walking can turn on, UnboundVR must verify KAT's normal joystick movement is out of the way. The real playspace backend still requires physical acceptance.

Setups

Keep it local, or use another gaming PC.

Same PC

KAT Gateway, UnboundVR, SteamVR, and the game all run on the gaming PC. This is the recommended first setup.

KAT→UnboundVR→SteamVR

Two-PC / Cloud

The same UnboundVR package installs on both PCs. The account/device layer identifies HOME and CLOUD; the encrypted live locomotion transport is still pending.

KAT→HOME→CLOUD→SteamVR
Open guided setup
Safety

No good signal? No movement.

Unbound Guard

Walking stays off if KAT's normal joystick movement is still active or can't be verified.

Stale input

If treadmill data stops arriving, UnboundVR marks it stale, resets Natural Motion velocity, and does not replay old movement.

Emergency stop

E-stop cuts through Quiet Play and stays latched until a safe, deliberate clear.

Independent project.
UnboundVR isn't made by KAT VR, Valve, or the games it works with. Compatibility will be listed only after real testing.