RGC OneBlock

RGC OneBlock

Build your own island, survive six OneBlock stages, and cross a vast void to reach the mainland.

Start with one block and turn it into a home. RGC OneBlock is a finite survival adventure for solo players, families and friends. Every player receives a separate island in the same world, so you can build independently, trade supplies, connect your bases and explore together.

From one block to the mainland

Mine through Meadow, Stone, Forest, Arid Lands, Deep Caves and Endless Mix. Each stage has a weighted block pool, and milestone chests provide equipment, enchanted books, emeralds and other useful supplies.

Your OneBlock regenerates for 5,000 mined blocks, then stops. The adventure continues: farm, build, explore the Nether and End, and find your way to natural terrain beyond the central 20,000-block void.

Built for playing together

• Separate player islands in one shared world.
• Solo, local-network multiplayer and dedicated Fabric-server play.
• Auto loot, with items dropping at your feet when your inventory is full.
• Solid placement previews and edge building in all dimensions.
• Coordinates, day counter and mining progress.
• Faster tree/crop growth and larger stacks for normally stackable items.
• Initial mob grace, random hostile waves, limited animal/villager egg rewards, and breeding for sustainable farms.
• Original RGC Inventory sorting, transfer and trash controls included in the companion pack.

Start your own game

Install the companion pack through CurseForge and press Play. On the title screen choose RGC OneBlock Help, then Create Default Game or Customize New Game. Review your world name and click Create.

You can also use Singleplayer → Create New World → World Type: RGC OneBlock. Use Customize to adjust the new world's settings. The host can change supported settings later through the pause-menu button or /ob settings.

For LAN play, open the world's multiplayer/LAN options and have friends join with matching Minecraft/mod versions. For a dedicated server, use the matching server package and share its game address.

Requirements

The current build targets Minecraft Java 26.3, Fabric Loader 0.20.1 or later, Fabric API 0.165.0+26.3 and Java 25. Shaders are optional. Minecraft Java and a valid game account are required.

For standalone-mod users, install RGC OneBlock and its required Fabric API dependency. RGC Inventory is a separate optional client mod; the companion pack includes it.

Feedback

Tell us what you built, how your progression felt, and which improvements you would like to see. Include the Minecraft/mod version and relevant log details with bug reports.