I just found a game called "Immune Attack" about obviously the immune system. I haven't played yet, but from what I can tell, players control a nanobot/artificial immune cell that is fighting off parasitic invaders. The Federation of American Scientist are working to push the development of more games. I also discovered that some hospitals have an E.R. game that prepares Doctors and Nurses for...you guessed it emergencies. I think this is a start, however I imagine that entities creating for profit are likely to consistently produce the better products.