Divis Mortis: an interactive survival game is, quite surprisingly, an interactive survival game that gives players a slim chance at surviving the zombie apocalypse. What's more, this being a particularly well written piece of interactive fiction (a text adventure, if you prefer) it actually manages to feel realistic and tense. Divis Mortis is a game without a graphics and thus a game that doesn't favor guns. You will not be shooting zombies in the head. You will instead be frantically searching for makeshift weapons, food, water and a safe place to take a nap in a beautifully crafted and at times humorous world.
You can happily play Divis Mortis in your web-browser and -as nature intrended- for free via this link. Oh, and if you've never played such a game before, I strongly suggest you start by typing help. Enjoy! I know I did.