Lead is way to acid & default.. Make a better one by adding fx'es till it sounds teh pro.
Ur track doesnt contain structure, u can make it better by adding a good intro, a buildup, a main theme, a breakdown etc.
The drums are kinda crappy, u can make them better by variating them, adding fx'es on them or finding better samples.
I thought this was a very good "attempt" at Tetris/ though is it a little on the short side it doesnt take away from the feel of the music.
Although, panning was a little awkward, really... and it seemed to be lacking a pushing feel that I think would be neccesary for what you were working at here.
Not a bad interpretation of Tetris. Regardless of what you may have been trying to do here, weather it be personal interpretation or duplication, the only comment I have is that you used far too much flanger in my opinion.
Good work, keep it up. Only 2,384,584,486 more songs until you land a record deal! :P