Grand Terrain replaces the overworld generation with much bigger terrain. Mountains can get over 1500 blocks tall, rivers run through the valleys between them, and the caves underground are a lot bigger than vanilla’s. Build height is raised to 2000, so you’ve got plenty of room.
What it adds
Performance
A lot of big terrain mods take ages to load or lag constantly. I put a lot of work into making this one fast. New worlds load in under a minute on my laptop, and it runs fine while you play.
Distant Horizons
This mod works well with Distant Horizons, and that’s the best way to play it. You can see mountains from really far away. If you’re recording or taking screenshots, use /grandvistas pregen <radius> to load the area around you first, so everything shows up with trees.
Compatibility
Before you play
If you like exploring or just want to see how far your PC can push it, give it a try.