Hi Guys!,
I am just curious to know if there has been any simulation games made with Unity? I am thinking about learning to make simulation games and all of their glory with Unity but, I would love to see some examples of things that people have made under the category of Simulation. If you know of anything then please let me know!
Thanks.
Look the Unite12 founders opening note, David presented few (of the many) simulation projects made with Unity (really really amazing and serious gaming). And yes, Unity is also good for simulation projects.
Check out Kerbal Space Program, its probably one of the best (and most fun) space program simulations I’ve ever toyed with. People at NASA even love it.
Very very cool. Thank you both! 
See link for info on several projects using Unity.