u/mountainboyv

I have scanned all 4 billion possible worlds for their tallest point, the highest peak that exists in the entire game is 484.73m above sea level. The seed is xN2Ncpfaj3 goto 294 7610. The maximum theoretical ceiling is just one metre above this however it never occurs in game.

This result was achieved in around 3 hours of checking seeds on a 5080 with a custom CUDA accelerated app. I've also tried to run a few other seeds but this is the only one i ran to 100% completion.