Obsidian get.
I was looking over the credits to Arcanum, and it's incredible how few people are required to make a huge, deep role playing game compared to the asset and cinematic heavy games we see elsewhere.
Yeah those teams are generally fairly small. Bit of an older game than Arcanum, of course, but here's the Fallout 1 team:
Some of the same guys went on to lead the design on Arcanum too - Anderson, Boyarsky and Cain. And Jason Anderson had a fairly big hand in Wasteland 2's pre-production, I believe, though he's gone from inXile now.