You ever see these "1 block skyblock" videos on youtube? Ever been disappointed by the fact the block replaces itself?

Do you hate yourself?

If any of these apply to you, check out this datapack! It replaces all the blocks in the overworld and nether (if you somehow get there) with air! It's not possible to beat the game (strongholds do not generate), but it is technically possible to expand. I think.

It's never been easier to permanently softlock yourself!

Biomes are normal, even if all the land is gone. And also the end is normal. But you can't get there without cheats.