I have no clue what Osu! Tatakae! Ouendan means, and I don't care. All I know is that in my household, yelling "Ouendan" calls a bunch of male cheerleaders to dance and get you out of your problems. As a physics major, this has been essential to solving tricky fluid dynamics problems. The game is an insanely addictive music game that is easy to pick up and difficult to put down. The game is in Japanese, but that didn't really hamper my fun at all. Sometimes the Japanese music can get a bit annoying, especially since I am not really into that sort of thing, but you will soon learn to look past that and maybe even tap your foot along with the game. The game has two sequels, both of which I most likely will give reviews of soon.
All in all, this first iteration of the series is a must have and isn't likely to become outdated anytime soon.