*shrug* Looks like the IL-2 engine with grass, some self-shading and bit more bump-mapping, to be honest. Doesn't look like there's anything different about the particle system, for example. It'll be more interesting when we get some more information about the inner workings of the sim, certainly.
The aircraft, though! Beeaauuuuuuuutifully detailed Spitfire and 110!
