The End of Ten Days

Copying my comment as review bcz why not.

Read it's mtl a year or two ago till 450. Stopped as the games were getting a bit boring.

It's like Alice in the Borderland but with a lot of twists.

Each time you win a game, you get some Dao.

You have to gain 3600 Daos otherwise the world you are in will face Annihilation.

A bit of a spoiler but you will learn about it in the first 30 chapters.

Ofcourse the task is impossible so everytime the world dies, time rewinds but only those who fullfil a specific task get to keep their memory but even that is not foolproof.

So the mc and the others may not even know but they may have been repeating this for hundreds and thousands of years.

Anyway it's easily a top 10 novel.

The mc is very smart, he is not evil but he will not mind doing it. He only protects those close to him. 

His only objective is to go back to Earth as his wife is waiting for him.

Is quite dark and has gore too(Cannibalism is not rare).

Also the difficulties mc faces are not solved through brute force but mostly through brains.

It is currently being translated rn by the name Ten Days Ultimatum.