Hi, I think this is the best cooperative tetris I know. I play with my girlfriend since a time ago and we have this highscore:
We play from dosbox, on standard 3000 cycles. I think you can cheat slowed it down, but we don't do that.
We are trying to record one good match on video. We got some matches recorded but the colors are altered. I'm looking if I can fix this.
Saludos.