Slime Jumper is a Jump 'n Run somewhere between Super Mario and Super Meat Boy. It is a cool platformer, where you have to dodge a lot of things, or you must not run into them.
On the one hand there are for example spikes, which you have to avoid, on the other hand there are bullets, wrecking balls, etc you have to dodge or use cleverly to pass the level.
Another mode is the local multiplayer, which is a bit like Mario Party. You play against other player in up to (at the moment) 6 different minigames, like "Capture the flag" or "Collect as many stars as you can". The clue here is, that every player can shoot bullets or balls (depending on the minigame), so that you also can play pretty destructive.