It's a bit miscategorized as an FPS. It was really one of the first good combat sims. Not outstanding graphics, but far more realistic combat than a typical FPS. The ability to hit distant distant targets is quite accurate, and the view of them from a distance very realistic, while the squad tactics are challenging to master. The challenges are varied, the map is simply beyond huge filled with NPCs that you'll likely never run accross during a regular mission, but are there just to add fun. There is hours of replayability on each level. The original game had FADE DRM protection and AFAIK was never broken, so thanks GOG for providing a version that won't require the CD! If you like America's Army of Falcon, etc. you should like this as well.