Surviving in a World Treehouse

- Protagonist: Lin Yue, a modern outdoor adventure blogger skilled in wilderness survival and equipment modification. Calm and resilient, he also has a “Creature Compendium” System that can analyze the organisms and resources found on each treehouse level.

- World rules: The world is formed around a “World Tree” that reaches into the sky. Two hundred independent treehouses float along its trunk, each with a very different environment, such as rainforest, frozen wasteland, desert, toxic fog, or mechanical ruins. Moving between levels requires taking dangerous cableways or using teleportation arrays.

- The key to survival: Collect “Source Crystals” from each level to unlock access, repair the treehouse core to resist corruption, and avoid mutated creatures and harsh environments. Survivors can choose to ally with one another or compete.