The Story
In Doom, you play as a space marine who has been sent to a research facility on Mars that has been overrun by demons from Hell. Your mission is to fight your way through the demonic forces and close the portal to Hell that they have opened, saving humanity in the process.
The game features a variety of different environments, from the research facility on Mars to the depths of Hell itself, and the storyline is told through in-game text and audio logs.