Aliens: Infestation is a side-scrolling shooter game for the Nintendo DS, released October 11, 2011. It is published by Sega and made by Gearbox Software and WayForward Technologies. The game follows a similiar plot as the game Aliens: Colonial Marines, with some alterations. The Sephora arrives around LV-426 were the Sulaco is in orbit with a different squad of marines and they are sent aboard the Sulaco as well as the surface of LV-426 and other locations that don't appear in the films Aliens or Alien 3.
The game basically follows the same plot as Aliens: Colonial Marines, with some notable alterations.
A group of Colonial Marines reach the USS Sulaco 18 weeks after the Acheron (LV-426) incident. They discover the presence of Union of Progressive Peoples (U.P.P.) soldiers and a Xenomorph Hive aboard the ship. After their encounters with a Xenomorph Queen, the Marines ascend down to LV-426. There they discover that the U.P.P. are trying to harvest the Xenomorphs for their own use. The Marines eliminate the U.P.P. presence in the area and destroys their satcom. The squad then proceeded to escape the area in an APC as the Xenomorphs attack.
However, the APC crashes into the Derelict Ship, ending up inside the Pilot's chamber. There the Marines face off against a Jockey-Xenomorph, ultimately defeating it. The Xenomorph presence suggests that the Weyland-Yutani Corporation is involved. The Marines travel to a Weyland-Yutani research facility located on the Martian moon Phobos, where they discover a series of experiments being run on the Xenomorphs, including the creation of gorilla Xenomorphs and a giant tank-like Xenomorph. The Marines, knowing of the company's plan, returns to the Sulaco where they face off against a gigantic Queen (possibly the Queen Mother), with the Sulaco ultimately being destroyed.