Even though I didn't have anyone to play with, I still found a great deal of enjoyment playing it solo; it's perfectly playable as such (if not a little mind-melting), and adds a spin of strategic challenge on an already great game.

Would love some music and sound effects to spice things up, but otherwise, a great idea!
Well done, and good luck! :D

Coop tetris is a really cool idea, I think during a game jam it is more like a play to tetris games at once but overall really cool.

I would have liked to hear some good old tetris music though :)

I found the concept cool

I liked this!  I like tetris a lot and a cooperative 2 player tetris is a really cool idea!  Great job!! :D

Cool concept !