Very good start, with very intresting mechanics!
Can't wait to see the full game!

If it can help, i found two possible glitch:
- when you are holding a cube and you go against a wall, there are visual and audio bugs, indicating that the collision is repeating. It get worse when you do this against another block, because in some case, you can clip accross the cube you are not holding.
- sometimes i'm able to destroy robot that are bigger than me. Don't know how to repeat this bug, because it occurs only two times during my playthrought.

Otherwise good luck for next