I kinda like it, kinda don't. I don't really like things that stress you out over time constraints, so I don't like that aspect of it. Also I'm envious of the people who've gotten extremely, mind-blowingly good at it, better than I'll ever be. =P I prefer a game called "1010!" which is similar to Tetris but without any time constraints. Also it works the same vertically as horizontally.