Winter!: Prepare for holiday gaming!
This is one of the most epic games ever, at least if you dont need fancy graphics. Dig your fortress into the earth, defend yourself from everything: viscious elephants out for dwarfen blood, dragons looking for your hoard or evil from inside the earth itself. And thats still just the tip of the iceberg! Complex Economics, Castle Building, Tradeing and Diplomacy and more and more... if you have not played it, you should try it.
Game Traits applied to Dwarf Fortress (PC) by Rhenaya