Shaker free Was $10...maybe worth $1...anyway worth free. Classic mode has buttons at very bottom for left, right, rotate, quickly fall. Stirred mode has finger swipes left, right, semi-circle in either direction to rotate respectively, and swipe down to quickly fall. 17 different block styles. Options include Sound effects on/off. Preview next block on/off. Show Gesture Trace on/off. Initial level. Random Block Color on/off. Random Block Style. Probably not as good as Tris though I wouldn't know never played that version. Although I heard/read EA $8 Tetris is subpar to DS version so that's disappointing.