Magicka is an impossible to describe game - you have to play it to get the full impact. I will say, it's easily one of the best multiplayer games I've ever played, and it's hard to beat the price. Very fun, very hilarious, and easily worth the low cost, especially when helping to support an indie developer. Plus, it has a demo, so there's no good excuse to not at least try it out and see for yourself the fun of inventing and discovering new ways to destroy your enemies, your friends, and occasionally yourself.

Everyone should play this game. It is fantastic.