Cataclysm Dark Days Ahead
Cataclysm is a Rouge-like RPG based around the ASCII visual system. While I like ASCII this version has custom tiles for added effect and looks. You start the game by creating a character with various attributes. Then are spawned into your very own zombie apocalypse. While being a bit complicated, It's a great game that i would recommend giving a try.
This is the default tile ZIP, be sure to check out other tile sets (there are some really good ones). and check out their site for the latest news and updates.