Crysis

Plot

The game begins in 

As Raptor Team regroups after the jump, Aztec is killed by an unknown entity. When the team finds him, they discover that whatever killed him also killed and dismembered a nearby squad of KPA. The remaining members of Raptor Team proceed with the mission, and find the hostages' boat frozen near the coast of the island. They also get their first look at the aliens who have been attacking their team, when a flying alien machine sneaks up on them and snatches Jester, killing him shortly thereafter. The first hostage the team rescues turns out to be a 

Nomad makes his way to Dr. Rosenthal's research complex, where he has found a rare fossilized artifact predating humanity by two million years. The partially excavated artifact resembles one of the flying machines (designated "exosuits") that has been attacking the team. Rosenthal also references other discoveries of similar artifacts in Afghanistan and Siberia, suggesting that the 

The U.S. military then begins a full-scale invasion of the island, led by 

Nomad is trapped and decides to continue into the alien structure. Shortly after entering, the environment becomes zero-gravity. Nomad uses his hydro-thrusters to maneuver and encounters hostile sentient Ceph. He also sees a possible invasion force consisting of many Ceph machines. Nomad manages to escape, but the structure creates a massive sphere of energy that freezes everything outside to -200°. Once outside, Nomad is attacked by various Ceph machines before finding Prophet. Prophet was able to engineer a weapon using the Ceph's technology, the Molecular Accelerator (MOAC). Prophet's Nanosuit is malfunctioning, and he frequently has to stop and recharge it using heat sources, such as the burning wrecks of military vehicles. The two leave the ice sphere and rescue Helena, whose VTOL crashed. Prophet leaves with Helena on another VTOL. At the U.S. evacuation point, one of the last VTOLs rescues Nomad from an unstoppable quadrupedal Ceph exosuit, which kills Major Strickland. As they leave the island, the VTOL's pilot is killed and Nomad must fly back to the 

Once there, he is debriefed by Admiral 

Nomad is ordered to repair one of the carrier's damaged nuclear reactors. The Nanosuit is resistant to high levels of radiation, although prolonged exposure proves deadly. While Nomad is in the reactor room, Helena sends an experimental signal through Nomad's suit that causes several Ceph machines to absorb too much power and overload, destroying them. As Nomad returns to the flight deck, Admiral Morrison is killed and Nomad takes the prototype TAC-Cannon. On the flight deck, Nomad fights a Ceph exosuit similar to the one that killed Strickland. A massive Ceph warship then emerges from the sea, and Helena manages to deactivate its shields by sending a signal through Nomad's Nanosuit. Nomad then uses the TAC-Cannon to destroy the Ceph warship, which falls on the carrier and begins to sink it. Nomad runs across the flight deck and jumps off the carrier into the waiting VTOL, which is piloted by Psycho. As they fly away, Helena is nearly pulled out of the aircraft by the energy field created by the destroyed alien warship. Psycho then receives a transmission that there is another Carrier Strike Group en route to the island and suggests meeting them. Nomad protests, claiming that since they now know how to defeat the Ceph, they need to continue fighting. A transmission from Prophet, who is inside the energy field on the island, is then received. The VTOL is then seen turning around and heading back to the island.