Sotoxi

Sotoxi is the brand of good cigarettes in Doom 3. Cartons of them are found throughout the game in storage lockers, by equipment and ammunition, and by coke cans and empty burgerboxes. Apparently, the scientists, military personnel, and Z-Sec squadron all love to stand around and smoke in the dark while waiting to ambush you.

A Sotoxi is equivalent to a full-strength, short cigarette. The computer-station guards love to smoke Sotoxis while drinking their coffee and eating stolen medication from the medical labs. The chaingun commandos can be caught smoking a Sotoxi just as they walk out from a red-lite storage closet.

When the UAC facilities on Mars were constructed, months went by with smooth operation, until the staff noticed something. The people in the live video feeds streamed from Earth showed they were smoking cigarettes, and the UAC staff had none of it. They too, wanted a cigarette to smoke from time to time, or all the time. The UAC provided everything the UAC staff needed, and now they wanted smokes. They got them as Sotoxi full flavor.