He is extremely productive, to be fair - "Shining Rock Software" is only him, the entire game, pretty successful on Steam, is just coded and maintained by him.
It's an absorbing simcity-esque game, as long as you don't go in expecting Civ/SimCity replay value it's definitely worth it if you like those type of games, or at the very least putting on your wishlist for the steam winter sale.
The level of quality for a one-person team is phenomenal.
