This is just such an awesome 3D puzzle game way back in the playstation 1 days. It's fun, gets you to think 3 dimensionally, all moving a beach ball in 4 directional movements while able to change direction and gravity is always below you, you'll have to jump and time where to go and how, etc. Each world (roughly about 20 levels) introduces new challenges, and there's hundreds of stages plus bonus stages, I think 12 worlds, including bonus extras after. Plus, it has overall decent multiplayer, but does require playing single to unlock later ones first. An overall fun puzzle game that gets you to think, isn't too difficult (but can take a bit of thought still), and just an overall neat concept for a game! Also, preferably the Japanese version is probably the best because of the other ones have a bug where they placed something needed in one of the later bonus optional stages, making it impossible to get a perfect score in any version except the Japanese one. Still, everything else in the game works, can fully do all main missions, still do all the other bonus, it's really just the one stage out of hundreds is all in American and a different mess up in the European version, both very minor and don't matter if you're not going for a perfect score (which does take a lot of work to go for perfect).