Hey, thanks for playing. I might put some prompts in the first level, but to be honest my hope is that people will figure out for themselves how things work in the Free Play mode. Did you play the Free Play mode? Because you didn't mention it. I do recommend people look at the controls and play that first. Having said that, I could probably make it more clear in the controls how to rotate the cube.
About the physics, how do you feel they could be improved? It's hard to tell what exactly you were having trouble with.
And about the projectiles, yes you got it! That is exactly what they are for. :) Hm, maybe I should also make that more clear.
Thank you for the ideas. I've got some changes to make in the How to Play section, at least.