Age of Gray Fog: Endless Secret Realm

1. Apocalyptic background: On September 15, 2023, gray fog suddenly fell across the world, which was known as the "fog disaster" in history. Various mutated monsters are born in the gray fog, and "doors to the secret realm" appear randomly at the same time - after entering, it is an independent closed space with monsters and unknown rules. After passing the level, you can obtain source of crystals, materials, equipment and other rewards. 2. No system settings: There are no value panels, task prompts, and reward descriptions. All secret realm rules, monster weaknesses, and clearance conditions require humans to explore by themselves. The average mortality rate in secret realms exceeds 70%, and the mortality rate in high-difficulty secret realms is close to 100%. 3. Origin crystal: It can be obtained by killing monsters in the secret realm or clearing the secret realm. After taking it, it can strengthen the physical quality (strength, speed, constitution, etc.). It is the only way for human beings to evolve. However, excessive consumption will cause distortion and turn into an irrational monster. 4. Power structure: Two years after the fog disaster, large and small survivor strongholds were formed in various places. Jiangcheng University is the largest campus stronghold in the suburbs of Jiangcheng. It is divided into three major forces: the Student Union, the Iron Fist Gang, and the Scientific Research Society. They divide up the five known low-difficulty secret realm entrances in the school. There is a larger survivor alliance "Jiangcheng Alliance" in the main city area, which controls more high-level secret realm resources. 5. Secret realm classification: from low to high, it is divided into F, E, D, C, B, A, S, SS levels. The higher the level, the more complex the rules, the stronger the monsters, the richer the rewards, and the mortality rate increases exponentially.