Great FREE mash-up of platformer and rogue-like genres
I gave this game a high score because this mish-mash of gameplay concepts comes together perfectly. It has that classic feeling of a game that is almost impossible at first, but after hours of playing you'll be surprised by how good you get at it.
Best of all, it is totally free.
The only drawback may be that it is a little awkward to play with a keyboard. I highly recommend using some kind of gamepad.