A wonderful pixel Sim colony builder with soothing music and a lot of charm. It's constantly being updated and expanded to offer more types of settlers and more things to do. It's a bit of Dwarf Fortress with less tantrum cascades. Build towns, level mountains, dig way down into the terrible depths of the earth for goodies and get destroyed by angry skeletons.

More people should play this, particularly if you're like me and you enjoy a solid colony-builder that also happens to have some simple combat.