Doom 3 - Full Game Walkthrough - No Commentary

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Doom 3 is a sci-fi horror fantasy first-person shooter computer game developed by id Software and published by ActiVision.
Set on November 15 and 16, 2145 on Mars, Doom 3 is a horror focused game unlike previous action-packed entries.

Prior to the events of the game, the UAC's original project involving the exploration of Mars was to transform it into a habitable planet with the creation of Hydrocon and a breathable atmosphere.

However, the initial construction of Mars City accidentally unearthed underground artifacts and structures that revealed the existence of an ancient Martian civilization. In response, the UAC modified its original project on Mars to function as an Archeological Excavation Site, with labs and general posts established in different locations. The explorations of the caverns in 2104 led to the discovery of ancient artifact codenamed U1, the Soul Cube, along with stone tablets written by the ancient Martian civilization.

The tablets contained knowledge and technical information on a powerful teleportation technology. As a result of these discoveries, the UAC's primary goal on Mars changed to the recreation of the technology, with the supervision of UAC's brightest scientist and creator of the Hydrocon, Dr. Malcolm Betruger. The development began in the secured location known as Delta Labs. At the same time, scientists like Pierce Rogers were in charge of the archeological effort, mainly with the translation of the glyphs contained on the stone tablets. These glyphs warned of the potential risks of using the teleportation technology, which was the reason why the Martian civilization became extinct.

Once activated, the teleportation technology wasn't exactly a teleportation, it worked as portal device which led into another dimension. After several tests with cameras and animal subjects, the scientists discovered that this dimension was filled with sweltering heat and hideous creatures. Betruger and other Delta Labs personnel immediately began to try to explore this dimension using human subjects. However, many of the people that returned from the tests suffered from immense psychological trauma which lead to their deaths, many others not returning at all. As the tests occurred, the scientists at Site 3 were already translating the warning, but by the time they discovered the horrors of what happened with the Martian civilization, it was already too late. The teleportation project had already become focused on exploring and exploiting the other dimension discoveries, such as bringing back dead and live species and long travel on the dimension. Not long after, the whole Mars Base started having strange problems with light and energy, several personnel reporting frightening situations and asking for transfers off Mars.