My Slayer System: Rise to Supremacy - World building: Qi, werewolves, adventurers and beasts

After picking up a phone on the streets, Feng Yuchen was sent to the world of High School of the Dead. He, along with 100 people, have to travel through various worlds, fight and solve quests in order to survive.

Whoever dies in that world, would be teleported back to the real world without memories of what happened before and die in an accident one year later.

- Description from Novelupdates

As the last abyssal demon in the world, Wen Long was pulled into various worlds to do tasks by a guy who claimed to be a system. The goal of her mission was to save those villains who had been blackened for various reasons…

- Description from Novelupdates

After Wang Mang died, he turned into a giant python and evolved like crazy!

With the help of his family, he grew bigger and bigger! From the first few meters to tens of meters, and then to hundreds of meters!

From Burmese Python to Titan Python, and then to Deep Sea Python! When Wang Mang’s size reached hundreds of meters, the earth took a sudden change and the disaster came…

In the tenth year after the new era, the world finally came to an end. Zhang Mu truefully waited for his death, but unexpectedly found that he had returned to ten years ago. With his memory about the future, he swore that he would change the calamitous history, saving the earth from being destroyed! Walking dead, zergs, evolvers, and various mutated animals… nothing can stop him! The first step is to retrieve his identity as an era merchant , then find all the treasures he can remember to enhance himself!