Gnomoria is the latest game on sale at IndieGameStand. Pay What You Want for the game.
Currently, it’s in alpha status but you get updates for the life of the game. Pay more than $1 and you’ll get an activation key for Desura. The game is not on Steam currently but there is a Greenlight page for it. If it gets accepted to Steam, you maybe get a key for it later. Deal ends in about 79 hours.
If you’re a Dwarf Fortress player, you might enjoy this game.