However, the UAC kept those events secret, thanks to a cover story about a disastrous industrial accident. According to the story (which will be explained in the expansion's introduction), the Union Aerospace Corporation abandoned its facilities on Mars after the demonic invasion was thwarted.

In the expansion, you're a combat engineer dispatched to Mars to investigate a mysterious signal. You'll once again play as an unnamed character, though it won't be the same marine from Doom 3. Resurrection of Evil picks up approximately two years after the events of Doom 3. It's time to battle the demonic monsters and zombies of hell once again! Notice the built-in flashlight in the helmet. We were able to find out what this continuation in the Doom 3 saga had to offer, as we got the lowdown from the folks from id Software themselves. That's no accident, as id and developer Nerve Software began work on Resurrection of Evil while Doom 3 was being completed. Though you defeated the demonic invasion from another dimension, Betruger, your main foe, was nowhere to be found. The ending of Doom 3 certainly left an opening for an expansion. Only this time, we're waiting on Doom 3: Resurrection of Evil, the expansion pack to last year's blockbuster first-person shooter. We begin 2005 just as we began 2004: in anticipation of a Doom 3 title.

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