The first Crysis is actually a pretty mediocre FPS. The only reason it was so popular was because it had the best graphics of 2007. In fact, in general, it wasn't until the early 2010s that a game with similar quality graphics was released. But in reality the game has terrible AI, boring repetitive open world design. I don't think the story is very good as well as the gameplay. Even though it has graphics ahead of its time, Crysis is a very simple game compared to COD Modern Warfare released in the same year.