This is one of my favorites.
And I'm not joking. The graphics are superb, the idea so simple it's amazing, and nowhere near being anything complicated. The music is great and I love how it all changes whenever your health starts to get a bit too low. And probably the best reason to love this game.... is that the things you are killing and the reaper is so fucking cute. You kind of feel bad killing them but you can't wait to do it again. I love this game, in my top 20.