abstract
| - Trigens are primates and/or humans that have been genetically altered by Dr. Krieger and his scientists in the testing of a mutagen. It was designed to enhance the strength, speed, and endurance of humans. The experiments yielded good results in terms of strength and speed enhancement, but the mutation had a horrific side effect; all Trigens become horribly deformed beasts, and their minds are torn apart by an overwhelming primal urge to kill and feed. They were at first kept in containment areas and cages in various installations throughout the islands, but were able to escape (and, in some cases, were intentionally turned loose by other Trigens). There are five types of Trigens, of which two are chimpanzees and gorillas, and three are derived from humans. There is also one "failed" variant of Trigen which is seen twice but never encountered in-game. It can be found in the Bunker as a dead specimen and in a cutscene in which Jack and Val are confronted by Krieger in a helicopter. The scientists wanted the specimens to be kept alive, even if they were loose and killing personnel, much to the horror of the mercenary force. Eventually, the mercs began to kill Trigens to stay alive and defend themselves but their efforts were in vain as the mutants soon overwhelmed the islands and celebrated in victory. Trigens have a simple hierarchy based on size. Bigger Trigens will give orders to smaller Trigens when searching for Jack.
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