You can play the game on most VR systems, or on a desktop, using keyboard.
Desktop/keyboard works fine for 2D games, but it's pretty hard to play 3D games in that setup, since you really need the ability to look at the play area from different angles, which it's only easy to do in VR.
This is not intended for use on Mobile devices, and there are no touchscreen controls. Sorry!
Move around the arena using left trigger to teleport (or if you have a big enough room-space play area, just walk!)
There's a tutorial in the center of the arcade, which will teach you the game & controls, but in summary...
Start a game using B or right trigger
Move blocks around using the left thumbstick.
Rotate blocks using the right thumbstick, or by using right grip and rotating the controller in the way you want the block to rotate.
A, X or Right Trigger to drop a block quickly.
Which game you control gets determined by the direction you are looking + the distance to the game. The game that is currently under your control will light up around the base & top.
You can move around the space using WASD, or cursor keys, and mouse to move the camera view.
However it's much easier to get into a good playing position by using the number keys (the ones on the top of the keyboard, not the number pad).
If you move your view around while you are playing using WASD/mouse, you can always snap back to a good default playing position using these keys.
For in-game controls, there's a tutorial in the center of the arcade (press 1), which explains it all, but in summary:
The keyboard controls are fixed in space, so even if you walk behind the machine, the orientation of the controls remains fixed to your original position. Maybe it would be better if they auto-adjusted, but I think there's a risk of confusion either way. I'm not expecting keyboard players to change their point of view much anyway, so I don't think this is such a big deal, but please give feedback if you disagree!