Dark Caverns

Dark Caverns is a Minecraft NeoForge mod for 1.21.1. It adds a 256-block-tall cave dimension beneath the Overworld bedrock. Large vaults connect through smaller passages and shelves. Vertical rifts cross several elevations. The dimension has four biomes: Rocky Caverns, Molten Depths, Glimmershroom Forest, and Tangled Hallow.

Players enter by finding a Forgotten Tower, taking its key, and opening a gateway through Cracked Bedrock. The gateway creates a linked entrance on a cave floor and provides a route back to the Overworld.

Players can make Platinum tools and armor, then upgrade Platinum equipment with Hellstone or Shroomstone. Scorchsteel armor conceals stationary players from hostile mobs. Luminite powers the Cavern Compass and several light sources.

Dark Caverns requires Minecraft 1.21.1, NeoForge, and GeckoLib. The download page links to the current Modrinth and CurseForge releases.

• Official website for guides, recipes, equipment stats, and mob drops
• Downloads
• Modrinth
• CurseForge
• Issue tracker for bug reports and feedback

Building Dark Caverns requires Java 21. The Gradle wrapper downloads the other build dependencies.

./gradlew build

Run the fast in-game regression suite with:

./gradlew runGameTestServer

Large generated-terrain acceptance tests are kept out of the normal edit/test loop. Run them before releases and after substantial world-generation changes:

./gradlew runSlowGameTestServer

To run both tiers in one server invocation:

./gradlew runFullGameTestServer

Check or apply the repository formatting rules with:

./gradlew spotlessCheck
./gradlew spotlessApply