Good game concept!
I gave this a 5! Its the sickest, most unbelievable piece of innovation... ok thats a bit too many words, but yeah the idea behind this is great. Its a perfect parody of tetris, so well incorporated into sh*t!
I like the concept, and I think it could make an awesome game. All it needs is some refining. A way to get rid of useless blocks, that don't connect to anything. More variety of blocks, like maybe 2 or 3 cubes together, and you know tweaks and stuff.
Graphics might need some work, but the sound was good. Overall good job on it! Can't wait for version 2!