The space landing force in Doom 2D was sent to Mars, where a complex owned by the United Space Corporation is located. Secret research into Hell took place there. The laboratory was built on a portal once discovered and scientists began to study it and the possibility of using it for the benefit of humanity. In the end, everything didn’t go as planned at all. Demons climbed out of the portal and attacked the colonists. The paratrooper must retrieve secret research files on hard drives and save those who remain alive. Help him, he will have to move around the premises, fighting demonic creatures in Doom 2D.