

The flow is controlled through the construction of an Argent Tower, both harnessing the energy and providing a portal directly to Hell. The facility has been able to solve an energy crisis on Earth by channeling energy from Hell into a renewable power source called Argent energy. It is set on Mars on a research facility of Union Aerospace Corporation (UAC). The single-player campaign consists of thirteen levels. Compared to Doom³ the areas are wider with more focus on verticality and rewarding an offensive approach, doing away with the slower horror aspect based on scares.

While many elements of the series are revisited, the focus for this entry is on fast gameplay based on movement, fights switching between different weapon combinations, and violent gameplay with brutal finishers, more akin to the first games. Doom is a reboot of the first-person shooter series and it consists of three parts, accessed and loaded separately from the main menu: a single-player campaign, multiplayer with different game modes, and the SnapMap editor where custom maps and game modes can be created and shared.
