How to open a survival mode in my world?

1. First, create an infinite survival mode and choose survival. If there is a known seed, you can choose to find the seed in the Advanced section in the upper right corner and enter the known seed.

2. Click Settings to set the difficulty of the survival mode, from simple to difficult.

Next, you will be born at random somewhere. If you enter the seed, the player will appear in a known place. Next, start the challenge of survival and use all the resources at hand to create [your world].