d3v_c's Terrain Overhaul

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d3v_c's Terrain Overhaul

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Fabric worldgen overhaul for 1.21.11: taller mountains, deeper terrain, rebalanced biome climate zones, more natural caves, and improved underwater shaping for realistic Overworld landscapes.

World Gen Improvements
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Fabric
Minecraft
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MIT License
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d3v_c's Terrain Overhaul

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d3v_c's Terrain Overhaul is a Fabric worldgen mod for Minecraft 1.21.11 that redesigns the Overworld to feel larger, rougher, and more natural while staying vanilla-friendly.

What it changes

  • Reworks Overworld terrain noise (continents, erosion, ridges, depth, sloped-cheese, and base 3D noise).
  • Expands world vertical generation to Y -96 to 383 (480 total height).
  • Retunes cave generation (entrances, noodle, spaghetti, pillars, and cave-cheese) for more varied cave systems.
  • Rebalances climate noise (temperature + vegetation) for smoother biome region transitions.

Compatibility

  • Minecraft: 1.21.11
  • Loader: Fabric (0.18.4+)
  • Dependency: Fabric API
  • Java: 21
  • Best used on a new world.

Known limitations

  • Only newly generated chunks use the new terrain.
  • Existing worlds can show chunk borders where old and new generation meet.
  • Incompatible with other mods/datapacks that override the same Overworld worldgen files (noise settings, density functions, cave/climate noise, village structure files).
  • No in-game config menu yet.

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