Take an early 1990s FPS, smash it into an auto-runner, add a dash of Pac-Man, and you'd end up with Hammer Bomb. You're dumped in dank mazes and dungeons full of hideous beasts and must stomp along, finding keys, loot, weapons and the way out.
Levels are randomised, adding a Roguelike quality to proceedings, and the entire game's underpinned by a levelling up system. This means XP being awarded for killing loads of monsters, rapidly finding the exit, or performing other tasks, such as completing quests (which, in a nod to Ms. Pac-Man, involves hunting down roaming foodstuff).
Every few levels, you face off against a massive screen-high boss, darting towards it with whatever weapon you have to hand, before fleeing like a coward. Survive long enough and you can swap coins for upgrades.
Top tip: as soon as you've 150 coins and level 3 status, grab the radar, because Hammer Bomb is much friendlier when you can spot monsters on the top-down map.