I build this mod, because I liked playing in stoneblock packs.
This one uses the premise that was introduced in Stoneblock 3 and 4 where you have stone, then nether, then end.

A complete StoneBlock-style world generation mod for NeoForge 1.21.1

Built to match the world profile used by StoneBlock 3 and StoneBlock 4, Stone World Generation replaces the standard overworld with a fully solid stone world — no sky, no surface, just rock in every direction. Designed to drop into any modpack that wants that StoneBlock feel without being locked into a specific pack.

What It Does

Instead of the normal overworld, you spawn inside a solid stone world divided into concentric biome rings that radiate outward from the center. Each ring transitions smoothly into the next using custom blend biomes, creating a natural progression from safe starter area out into increasingly dangerous territory.

Biome Rings (inside out)

Ring	Biome	Notes
Center	Stone Safe	This is where you spawn...relatively safe.
1st	Stone	Standard stone, normal mob spawns begin
Blend	Stone → Deepslate gradient	Smooth visual transition
2nd	Deepslate	Darker stone, harder ores
Blend	Deepslate → Nether blend
3rd	Nether	Nether blocks and atmosphere underground
Blend	Nether → End blend
4th	End	End stone composition
Blend	End → Deep Dark blend
5th	Deep Dark / Eternal	The outer void — ancient debris, maximum danger

Features

World Generation

Fully solid stone world — no caves, no sky, no void bedrock issues
Custom noise settings for a perfectly flat, seamless stone fill
Lava sea layer in the Nether region from bedrock up to -40y.
Compateability with other ores that generate ore/stones.

Ores

Each biome ring has its own ore set placed at appropriate depths and densities:

Stone zone: Coal, Iron, Copper, Lapis, Andesite, Diorite, Granite, Amethyst
Deepslate zone: Iron, Gold, Lapis, Redstone, Diamond, Emerald
Nether zone: Nether Quartz, Nether Gold
Eternal/Deep Dark zone: Ancient Debris

Structures

Trial Chambers — fully enabled with custom loot tables tuned for StoneBlock progression. Normal and Ominous variants both supported with unique, rare, and common reward tiers
Mineshafts — enabled across appropriate biome rings
Monster Rooms — enabled for dungeon crawling
Dungeon Crawl (optional) — biome mappings included for compatible dungeon generation if Dungeon Crawl mod is present

Spawn Room

Custom spawn room generated at world origin in the Stone Safe zone
Gives new players a safe foothold before venturing into the stone

Loot Tables

All Trial Chamber loot tables are customized — more progression-appropriate rewards including enchanted books, diamonds, gold, iron, wind charges, and experience bottles. Ominous vaults scale up with better gear and higher diamond/emerald counts.

Compatibility

NeoForge 1.21.1 — required
Dungeon Crawl, Apotheosis,Not Enough Trials / Hellish Trials
Designed for use in modpacks — no hard dependencies beyond NeoForge and Minecraft

Installation

Drop the JAR into your mods folder. No configuration required. Works best as part of a StoneBlock-style modpack where the overworld is expected to be a stone void.

This mod replaces the overworld dimension. Do not use in a world where you want a normal overworld to exist alongside it.

License

MIT — free to use, modify, and include in any modpack. Credit appreciated but not required.

Author: Kotawolf

Stone Block Generation