Generic controls, wrapped around a beautiful immersive environment packed with action and game play mechanics.
The artificial intelligence is top notch. Enemies will take cover, call reinforcements, try to flank you, and all that good stuff. Their aggression of course, is determined by the difficulty you select before starting the game.
The non-linear nature of this game puts you in command of what is, strategically, the best way to move. Over here [insert some pros and cons], over there [insert pros and cons] or look for a new way to go. Freedom to go anywhere on this island is the best part, and getting to your objective, because of it, is so much more rewarding. You'll be packing an arsenal of weapons that you will acquire as you progress through each level. From M16s to sub machine guns, everything you expect is here. I don't really need to discuss it, but the graphics of this game are amazing. The gun models aren't the best, nor are the creepy corridors, but sheer detail on the island and possibly one of the best water effects can be one of a kind eye candy, even in 2007. The online isn't too hot though, its very generic, and the generic controls, and speed of the player/pace do not match the tropical island multiplayer setting. Shooting people that are going pretty fast, with wonky shooting mechanics (that work for the single play, but are still a bit too fast paced for the atmosphere of the single player) turn out to be one mess of an online component. It surely had potential, but its obvious crytek was shooting for an amazing single player experience, and they pulled that off.