Lost in Fengyu

Players are forced into various dungeon worlds of horror, fantasy, science fiction, and suspense. Only by completing tasks issued by the system can they survive and obtain points/rewards. Failure results in erasure or worse (becoming a copy NPC, mental pollution, etc.). The chosen ones come from all corners of the real world, and death, near-death, or specific trigger points are the main ways to draw them in. Players can form teams, but betrayal and competition are fierce. Points are used to redeem survival supplies, weapons, skills, physical enhancements, and even a short break from the dungeon. "Abyss Store" exists. The source of the system? Purpose? Is there a real way to escape? Are there resistance groups?