The original idea was sort of a combination of Gauntlet and Super Meat Boy - I only intended to spend one month on it, but at that point the game was getting some positive feedback from playtesters, so I figured I'd continue with it a bit, add some unlockable rewards and get it into a more polished state. So this is the final result.
IndieGames.com did a post on it as their freeware pick of the day.