sorry not english speaker.. just some advice on new versions (if there will be)
the pillow-like tetris refers to this video:
that video is widely spread on chinese social network: http://www.baidu.com/s?cl=3&wd=%B6%ED%C ... fr=vid1000
and then the attack refers to a feature in 2-player game, like most multiplayer competitive tetris games do, one sends "garbage" to the other when he performs multiple line clear. it'll be even more fun if the broken pieces cleared will be sent to the opponent in this game.