Flat V2

Flat is a minimal, terrain-only Iris pack for fast, level world generation. It contains one dimension, one region, one plains biome, and one constant-height generator.

Generation contract

• flat uses SUPERFLAT mode, which runs only terrain and biome generation.
• The dimension uses the current standard build range of -64..320 with a logical height of 384.
• fluidHeight: 0 plus the biome's fixed generator offset of 3 places the grass surface at world Y 3.
• The surface is one grass block over two dirt blocks. The dimension rock palette fills everything below those layers.
• The same biome resolves land, sea, and shore selections, so every column has a valid biome.
• Native structure generation allows only the five minecraft:village_* variants. Every other Minecraft 26.2 structure family is denied through importedStructures.disabled; village placement, processors, entities, loot, and locate behavior remain native.
• Carving, mantle features, decoration, and post-processing are disabled explicitly.

Install and validate

Install this entire tree as flat under the Iris packs root:

• Bukkit/Paper/Folia: plugins/Iris/packs/flat/
• Fabric/Forge/NeoForge: config/irisworldgen/packs/flat/

On Bukkit-family servers, validate with:

/iris pack validate pack=flat
/iris pack status pack=flat

Create a disposable world with /iris create name=flat_test type=flat seed=1337.