Destro Plays: XCOM, Enemy Unknown and Warlock, Master of the Arcane

[Domochevsky]

It's on Gamers Gate.

And Steam does have an offline mode, if you really hate the problems that most DRMs have. Personally, I check Gamers Gate and GOG first, but I still buy games off Steam that aren't on those sites (Cave Story and Team Fortress 2 being good examples).

GamersGame says

DRM:Steamworks (Requires a third-party download and account)
Activation:Must be activated on Steam

and the Offline Mode of Steam is a joke at best.

I tried Towns a while ago, and it seemed still to be in heavy need of development. In the same way, Gnomoria isn't bad, and Timber And Stone is looking to shape up quite nicely, too.