You might not know it, but the 2021 Classic DOOM II Marine Skin is as badass as you would expect it to be. Apparently, aside from its impeccable visuals and storyline, it can be invaluable training material if you want to level up your skills in the military. At least, the Marine Corps thinks so.

It Started With Marine Doom

Marine Doom is a single-level patch was designed for use by the US Marines. In 1996, it was made available for the public to download and explore. Sergeant Daniel G. Synder pushed the access to be available for the public to get feedback on how to improve the game.

The game starts with four Marines who need to accomplish a specific mission where they would end up destroying an enemy bunker. Then, the soldiers must exercise various skill sets to finish the game, including communication, navigation, resource planning, and attack/defense.

But before Sergeant Synder released the version to the public, Gen. Charles C. Krulak, Commandant of the US Marine Corps, issued a directive to use wargames to improve “Military Thinking and Decision Making.” He led the charge to start a specific USMC department called Marine Combat Development Command, whose role focuses on developing, exploiting, and approving computer-based wargames to train USMC troops “for decision-making skills, particularly when live training time and opportunities were limited.”

In Marine Doom, there were a couple of simulation experts who chimed in including Lt. Scott Barnett who designed the fireteam simulation, which focused on mutual fire team support, protection of automatic rifleman, proper sequencing of an attack, ammunition discipline, and succession of command.

So, the Marine version of Doom required players (troops) to work in a group of four as they begin with their own tactical objective. In addition, a couple of firearms are featured in the game, like the BFG9000.

The map was also designed to support a four-player cooperative mode. There’s an option to play this as a single player, but the difficulty is probably five times higher than the team play. In the DeHackEd patch, trainees are allowed to do a cooperative mode that can include up to 20 people, which also means the soldiers are susceptible to hitscan attacks.