Forget what you know, the variations offered in this game let you learn how to play tetris all over again. Some of the variations are fun and others will probably turn out to be not for you. I know I had a problem playing the squares version of this game where you had to make 4x4 squares out of the same types of pieces. I never quite figured that out. There's another version called collapse where the pieces fall down as rows below them are cleared. This is kind of like Dr Mario, where extra pieces fall down to the playing field below, and unlike classic tetris where you have to clear the rows above a gap to fill the gaps. There's a version where the same colored pieces stick together. This was challenging because pieces also fall down as you clear the rows like the version above and when two of the same color pieces touch, they stick together. Its an interesting twist. In both versions pieces are both traditional and segmented, for example sometimes the straight piece made up of 4 segments will be all in one piece/color, sometimes it will be made up of 2 or 3 or 4 different pieces/colors. Which makes it all the more challenging, you have to plan for how the segments of each piece will fall as well. Another added bonus is that now your piece preview shows you the next several pieces that are in the queque (I think it shows the next 6), not just the next one up. The only version of Tetris that I think is missing was the version for Nintendo '64 Tetris Sphere. That game brought the Tetris game to a 3-Dimensional level where you had to get rid of groups of pieces instead of organize them into groups. When they bring that game over to the next-gen systems then my tetris collection will be complete. Plus you can customize a little cube to look as you wish and you can name it as well, it will serve as your guide and watch you and let you know how you are doing. There's a couple of other versions and of course classic tetris but for each one the challenges and strategies are different. They wrap a story around each version to explain why each game plays the way it does, pieces collapse because of a higher gravity and they stick together because its hot. Fortunately the same basic traits that kept you playing the original tetris games are still there. Its one of the oldest games out there that is still played today.