This game is most comparable to Super Meat Boy in that you'll die hundreds of times trying to beat levels that require very precise platforming. Like Meat Boy, the load times after deaths are non-existent which is a big plus for this type of game. This game's main draw however is the competetive/co-op. I played through most of the game first with a few friends and then I played all the way through solo. The multiplayer surprisingly never gets too frustrating even though most of your deaths come as a direct result of playing with others. Playing with more than 2 players on the last two worlds can seem ridiculously impossible, as I had a much easier time playing later by myself.
My one complaint is that we encountered a few annoying bugs later in the game. One was a case where momentum didn't reset at a particular point after fans in a level. Not too bad, but slightly annoying. The other bug was on a few levels where the spawn was located on top of the door to the previous level, we would constantly enter that door upon death.
Overall this is a fun party game that includes a few other multiplayer modes alongside adventure, giving it some decent replayability. Worth a couple bucks.