This would have been a great one to post yesterday if I'd spotted it in time. Flash developer Armor Games has just released Dark Cut 2, a US civil war-based surgery sim in which you operate on a series of field casualties with a range of antiquated tools. You also get to load your victims, sorry 'patients', up with whisky - the only sedative available.
It's a polished game, with pleasingly gory visuals, but it'll run extremely slowly on lower spec machines. I love the concept of a historical version of Trauma Centre, though. The possibilities for follow-ups are endless: butchery on the bloody fields of Towton, bone-splintering amputations aboard the HMS Victory... Lovely.
You can play the game here.