A young and brave adventurer awakens from a long sleep. He stretches his stiff muscles, leaves the resting chamber, and begins his journey in the Doom Simulator filled with sinister creatures. You are the protagonist who has just awakened; create your electronic file with personalized styles and name it. Choose your weapon wisely, and pick up a Crowbar for the battles ahead. With the Crowbar in hand, you set off towards an uncertain destination. Begin Chapter 1: Ruins Homeland, where you have nothing to lose, passing through a business district. You can enter or exit the shops by clicking on the Enter and Leave buttons. If you enter a shop, you might find coins to collect if it is vacant.

Along the way, you meet a stray puppy that affectionately rubs against you, and you can adopt the Puppy as your companion. You come across an abandoned shelter where you discover a dusty, sealed bottle of wine from years past. As you walk further, you pass a dilapidated ruin which you can explore by clicking on the Explore button below. You also arrive at a well-preserved fortress-style residence and can knock on the door by clicking the Knock button. The door opens, and you receive a treasured muscle booster injection as a welcoming gift. If you encounter a group of exiles, attempt to communicate with them; if they ignore you and continue their conversations and drinks, you can choose to fight them or leave. You also meet a seasoned exile named Will, who joins your team.

With Will, Puppy, and yourself together, you are now safer than before as a team. You pass by a factory emitting strange paranormal sounds. Despite its abandoned appearance, many dangerous machines are still running. Alan is heavily fatigued and needs to recover his stamina. A mysterious flower appears on the road leading to downtown; decide whether to fight or escape from it. The experimental Orchid blocks the path with its body. You will overcome these challenges in this dark, evil-filled world, survive, and complete the trials ahead.