Stack all the way to the top in this slick addictive skill game.rnThere are 5 columns flashing back-and-forth, use spacebar to stop and align each row on top of each other.rnrnChallenge people from all over the world in multiplayer mode!rnrn1. Press space to stoprn2. Stack on top of each otherrn3. Get to the top!rnrnStopping on crystals is safe and gives you extra points, or if you are playing multiplayer, it cripples your opponent!
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