This is a video of me, Tasselfoot, beating Super Stacker in 162 seconds. I wouldn't call it a speedrun, as there are 3 mistakes in the run. I definitely can do about 2:10, if not 2:0x, if I get a 0 mistake run. The last level is just really hard to get on even the 2nd try.

If nothing else, this video will show you how to beat all the levels. Doing it quickly and consistently is up to you.

Game: http://www.kongregate.com/games/game_jacket/super-stacker/?referrer=Tasselfoot