The Textfire, Inc. prank is by now legendary (well, to those who know about it), but I downloaded the demo pack without this knowledge.
Operate! is one of the games in this demo pack, based on the game (well, that one where you have to take bones out of people).
From the first examination of the equipment it is evident that this game does not take itself seriously. The instrument tray is a gift from an insurance company, while the bone vat depicts bloodletting and assassinations. How charming.
The game is very short, taking about ten minutes to complete, but entertaining.