Our gameplay trailer: 

A square spawns in an abstract world. Nothing is clear. No guidance. No voice. Only motion.
Something glimmers in the distance... a crystal. Drawn to it by instinct, not reason, the square moves forward.
It doesn’t know why. It just knows: it must reach it.

Controls: 

Movement - WASD or Arrow Keys.

Jumping: Space, or Up Arrow.

ESC to pause. Allows you to reset the level or return to the level select screen.

Press R to quick-restart the level.

That's it, have fun!