Do you have a couple of weeks to spend completely obsessed with a sim? If not, I sure hope you also don't have $10, because A Game of Dwarves is here and quite prepared to ruin your productivity for a month.
As you'll see in the launch trailer below, the quaintly charming little dwarf life sim soon spirals out of control into an enormous mining extravaganza; although the campaign modes is story driven and directed, if you go into free play mode you should probably take some annual leave. It looks like Dungeon Keeper crossed with Dwarf Fortress, only wrapped up in an understandable interface, so apparently Zeal has been reading my diary.
Several digital distributors offer the sim; choose your favourite from this list.