Bit Dungeon full review
A dungeon-running roleplaying game where the only certainty is death: the App Store's awash with such games, known as Roguelikes. Bit Dungeon's a no-frills and more high-action take on the concept though, which means the only time that you're not cheerfully hitting a cartoon monster with a sword is when you're rummaging through its corpse to see if there's a better sword in there.
There isn't a whole lot of skill in there - it's a roll of the dice every time, and that gives it a certain gambling frisson. It might be faster and more frantic than most roguelikes (even a good run will last all of fifteen minutes) but it's not afraid of being brutal.