Aphophis' plot, setting, and gameplay mechanics are very similar to Crysis.

"Earth, 2029. A team of U.S. ufologists are investigating a mysterious UFO incident in Peninsular Malaysia. All contact with the team is lost when the Malaysian government quickly seals off the area. The United States responds by dispatching an elite team of Delta Force Operators to pacify the situation. As tension rises between the two nations, the UFOs involved in this incident reveal themselves, and begins to freeze a vast portion of the peninsular and drastically alters the global weather system. Now the U.S. and Malaysia must join forces to battle the alien menace. With hope rapidly fading, you and your team must unite and fight epic battles through the tropical jungles, frozen landscapes, the lunar surface and finally into the heart of the alien homeworld for the ultimate Zero G showdown."