Die Zombie! Die!

To put it simply, you find objects, solve puzzles, and fight  zombies and stuff. It's pretty violent and only suitable for older players, and there is only ONE good ending (unless you think dying is a good ending, which some people do). Remember to write down the code when you finish the game, as you will need it to play the sequel (which SHOULD be out by the end of the year, IF this story gets good enough ratings.)