Crysis is described as 'From the makers of Far Cry, Crysis offers FPS fans the best-looking, most highly-evolving gameplay, requiring the player to use adaptive tactics to survive' and is a first-person shooter in the games category. There are more than 10 games similar to Crysis for a variety of platforms, including Windows, Steam, Linux, Playstation and Mac apps. The best Crysis alternative is Just Cause. It's not free, so if you're looking for a free alternative, you could try eduke32. Other Crysis like games are Far Cry, Duke Nukem, Thief and HANGAR 8.
Far Cry 1, is Crysis, but in 2004 and without that ammount of money.