The truth is in there. In that chest cavity.
By Tim Colwill on September 30, 2013 at 5:14 pm
The secret mysteries of ‘Project: Trisha’, the ARG hidden in Surgeon Simulator, have been revealed. Six new surgeries have been added to the game, all of which include operating on various alien life forms with unidentifiable mysterious organs. Lovely!
You can check out this xeno-surgery in action below, or read more about how the ARG was solved at this somewhat indecipherable site here.
Source: PC Gamer