If you like the Olympics it's fun.
Having to unlock events is a good touch, that keeps you playing for a while just to get all of the events. And then there are character and event trophies that add to replay value. Everyone will find an event that they like and continue to play it.
The game is mostly how fast you can swing your arms up down side to side or spin your hand or whatever. It's a great multiplayer and if your big on stats, you can shoot for top 100 spots in the world with event results.
The good thing about the race events like swimming, track, single sculls or anything timed is that there is really no limit on how fast you get. It's always a chance to raise the bar and compete with your friends or yourself to see who is the fastest.