DOOM immerses players in a fierce battle between legions of demons, controlled by one invader player, and a cooperative team of up to four marines. The game guides players through two cohesive operations, during which the marines strive to achieve objectives like restoring power to the Union Aerospace Corporation’s facilities or manning expeditions right down into the pits of Hell. Meanwhile, the invader commands their demons to slaughter the soldiers time and time again in an attempt to protect their fiery domain and destroy all of humanity.
Each of the operations is made up of six missions, spanning a variety of UAC stations and the scalding territories of Hell. Each mission takes place on a unique map and provides a set of special objectives for both the invader and marines. The designated objective card indicates a goal for the marines to accomplish, while also providing an exact number of times the demons must kill the marines in order for the invader to crush the operation. In addition to these objectives, the cards also include special rules pertaining to each specific mission, shaping strategy with unique abilities for both sides of the struggle.
Alongside the objective card, the setup of each mission is decided by a set of threat, invasion, and event cards. The threat cards describe three different ways in which the invader may summon their demons from the portals across the map: Assault, Horde, and Infestation. The threat card is visible to all players, however, the demons at the invader’s disposal remain concealed from the marines on the hidden invasion card. The invasion card lays out six invasion groups which the invader may summon when the portals are activated, increasing their threat level on the board. The final step in the invader’s setup of each mission is sorting out the event cards, which make up the invader’s deck of special abilities and defense. Each mission’s carefully selected combination of these three elements makes every play a seamless and unique game experience.