Earth, 2019: A colossal asteroid crashes down to Earth.

The North Korean Government quickly seals off the island chain, claiming the mysteries of the asteroid for themselves. The United States responds by dispatching an elite team of Delta Force Operators to recon the situation and report back to the Pentagon. Amid rising tensions between the US and North Koreans, the asteroid suddenly bursts open, revealing a massive, 2km high alien ship. The ship generates an immense force sphere, freezing a vast portion of the island and drastically altering the global weather system. The invasion of Earth has begun.

The two rival nations unite to stop the aliens and save mankind. The newly formed alliance fights epic battles against the marauding Aliens. With hope rapidly fading, the player must lead a crack squad through lush tropical jungle, harsh frozen landscapes, and finally into the heart of the alien ship itself for the ultimate Zero G encounter with the aliens.

Some game features:
- Crysis offers players a highly immersive FPS experience in which they will have to adapt their tactics, weaponry, armor and gameplay style to survive and defeat the alien invasion.
- Crysis uses the leading-edge technology of Crytek's proprietary engine CryENGINE 2.
- An immersive story that puts the player in the pivotal role to repel an alien invasion and save mankind.
- A unique three-act structure that forces the player to use real-time armor and weapons customization to adapt to an ever changing dynamic world.
- Encounter a compelling, frightening and totally original alien species that uses its senses intelligently and work in combination with each other to present players with the most challenging opponents yet in an FPS.
- Enemy and ally AI utilize real-world military tactics.
- Take control of a wide variety of land, sea and air vehicles including trucks, tanks, boats and helicopters.
- Explore a living, dynamic world where earthquakes, breaking ice, landslides, and tornadoes pose a real and an ever-present danger.
- 32-player Multiplayer with real-time armor and weapons customization and an all new mode that combines player modification and tactical objectives.
- Emergent gameplay; actions taken in the game affect future outcomes giving each player a unique experience.
- Highly robust and easy to use mod toolset allow players to create their own expansive levels with game modes for both multiplayer and single player.
- The most realistic environments, spectacular special effects, physics game engine, lighting system and enemy AI through CryENGINE 2.