DRM free in theory but all they've done is remove the multiplayer menus and cd requirements. Game is completely stripped of all its Co-op features. The game itself has a wonderful soundtrack and immersive single-player missions. A huge assortment of aircraft and nice graphics. There are much better sim games out there for realism but Wings of Prey is fun compromise and has a variety of options to choose from. The game also supports Ultra-wide resolutions and I have had no issues configuring various types of joysticks and controls in the options menu.
