Ulrikr Dieterle who is a health sciences librarian is doing a great presentation on gaming and what we need to know. Right now she is talking about the demographics of gamers. I will later add a link to her presentation on the WLA web site -- she notes that it will be there.
She notes that some of the first simulators include "Rescu-Annie" used to teach CPR and flight simulators for pilots and astronauts.
She has talked about the early games like "Sims" which date from the 1980s and ran on DOS. The military is the largest producer of games in the US.
An interesting presentation and introduction. She presented a good reason for using games as part of the educational process, with many specific examples from the health area.