Graphics Crimson Skies looks great, making the most of your graphics hardware. The terrain is detailed, complete with tiny houses, streets, and even vehicles in some areas.
Trees literally cover the wilderness, and random objects add a sense of realism to the countryside.
Elevation changes are equally well done, creating a rolling terrain of canyons and mountains, complete with bridges, tunnels and rock formations. Flying through any of these obstacles results in an automatic screenshot for the players scrapbook, and cheers from the wingmen. All of this terrain modeling is not simply for looks, though. I also found the elevation changes useful during combat, placing a hill or other obstruction between myself and the enemy often shielded me from the hail of bullets. Unfortunately, no matter how hard I tried, none of my enemy pilots ever followed me into a treacherous area and crashed.