This game has a cool concept. You have one level avaiable in the offline mode (A quite fun one, by the way), but the true touch of the game is the online mode, where you can download different stages made by different people. The only problem I have with this game is the annoying fade-in-fade-out. Every time you die, you have to wait around 5 seconds to respawn automatically, and you can't respawn manually by pressing R.
Of course, since different people are making levels, some of them will probably be better than the other ones. But when it comes to the game itself, the only flaw is the fade-in-fade-out. Otherwise, it's great. Would recommend (Mainly after a few days, when you'll hopefully have a lot of stages to download).
An interesting game where you can download levels made by other people. Comes with a level editor so you can join in on the fun (but it seems to require you emailing your stage to him for him to put it on the server)