Way too many controls to remember, you should list them on the page.
Textures look awesome, hard to imagine they are just stock cubes like you said. Love the way the grab and drag mechanic works too!
Improvements
- Box collisions with player
- Space gravity
- Game lags when spawning boxes
- Program a quit function
- There was a mention of a slow mo mechanic but couldnt figure it out
- Also couldn't figure out how to tether boxes together.
Could do some interesting things with this prototype from here!