This is the official Nether roof survival challenge! the challenge is played in java on snapshot 20w08a and is inspired by skyblock.

1. Build tools and upgrade the tools
2. Build a base to be proud of
3. Create farms for food and resources
4. Build a source of entertainment (aka mini-game or something fun)
5. Escape the nether without dying

/execute in minecraft:the_nether run teleport @p 0 129 0

Try it in hardcore as well.