Round Island

# Round Island

Spawn on a small island in the middle of an endless, extremely deep ocean. Sail far enough and the ocean gives way to the normal world again. Round Island reshapes Overworld terrain based on distance from spawn and leaves biome selection untouched.

> **⚠️ Beta.** The mod is still in beta, so you may run into worldgen bugs. If you find one, you can report it.

## What it does

– **Spawn island:** you start on a small round island with grass and dirt, so trees and vegetation can grow.
– **Abyssal ocean:** the island drops off into a vast ocean whose floor slopes down smoothly to about 2000 blocks deep. It stays that deep for tens of thousands of blocks around spawn.
– **Back to the normal world:** past roughly 90,000 blocks from spawn, regular vanilla terrain resumes.
– **Deep ocean floor:** sand, gravel and clay patches, seagrass, kelp and ocean ruins, including on underwater hills and mountains.
– **Deeper world:** the world is extended down to Y = -2032, with a solid layer of bedrock at the very bottom.
– **No void under the old bedrock:** the world keeps generating below Y = -64 instead of ending at vanilla bedrock.

## Deeper means richer

Below the old vanilla bottom (Y = -64), ores get more common with every 100 blocks of depth:

| Ore | Increase per 100 blocks |
|—|—|
| Coal | +5% |
| Iron | +5% |
| Gold | +4% |
| Redstone | +3% |
| Copper | +2% |
| Diamond | +2% |
| Emerald | +1% |

Dungeons go the other way: they become 5% rarer every 100 blocks down, and are gone by the very bottom of the world.

## Compatibility

Round Island only changes the shape of the terrain: where land and water are, how deep the ocean goes, and what lies underground. Biome selection (temperature, humidity, erosion and so on) stays fully vanilla. Mods that add Overworld biomes keep working with no extra setup.