🌌 AOneBlock – One Block, Infinite Adventure

⚔️ Now with Bosses!

New in 1.29: every phase ends with a boss fight. Mine the last block of a phase and the magic block seals itself while a boss rises on top of it. Beat The Colossus, The Broodmother, The Drowned King and 18 more to move on.

Bosses are optional. Turn them all off with one line in config.yml, or remove them phase by phase. Servers that are upgrading keep playing exactly as before until an admin adds the bosses.

Your whole world begins with one magical block in space.

AOneBlock is a multiplayer take on the OneBlock survival idea, originally created by IJAminecraft for single-player. It is built on the BentoBox platform, so every player or team gets their own block, their own island and their own progress.

Related: ChunkBlock – one block and one chunk. Earn levels to unlock more land.

🎮 What is AOneBlock?

• 🧱 Start with one block, floating in the void.
• 🪓 Break it, and another one appears.
• 🌀 Progress through 21 phases, from Plains and Underground to The Nether, Deep Dark, The End and beyond.
• ⚔️ Beat the boss at the end of each phase to unlock the next one.
• ⛏️ Survive, gather and expand. Every block counts!

One full run is 16,000 blocks. Each phase has its own blocks, mobs and treasure chests, and when the last phase is finished the loop starts again.

AOneBlock is inspired by SkyBlock but plays differently:

• Resources arrive in a different order. Water, for example, is hard to get early on.
• There is no need for a cobblestone generator. The block gives you what you need.
• Mobs come out of the block too, so you have to build for them.

⚔️ Phase bosses

• You get a warning. Over the last 20 blocks of a phase a heartbeat plays and rises in pitch. A bell tolls five blocks from the end.
• The block is sealed. The boss spawns on the magic block, which can't be mined until the boss is dead.
• Your island is safe. Only players can hurt the boss, and bosses can't break, burn or blow up your builds.
• Losing isn't the end. If everyone dies or leaves, the boss retreats. Hit the magic block to try again. Each lost fight makes the next attempt 10% easier, down to half health.
• Teams get a tougher boss. Boss health grows by 50% for each extra player on the island, up to four players.
• Rewards. Every boss drops loot, and admins can run commands on each win or on an island's first win.

Don't want bosses? Set island.phase-finales: false in config.yml and phases end the way they always have. You can also delete the finale: section from any single phase file.

Upgrading from an older version? Your phase files are never overwritten, so nothing changes until you copy the finale: sections from the shipped phase files into your own.

🧰 Features

• 21 phases, all fully customizable: Plains, Underground, Winter, Ocean, Jungle, Swamp, Dungeon, Desert, The Nether, Plenty, Desolation, Deep Dark, The End, Lush Caves, Dripstone Caves, Mangrove Swamp, Meadow, Cherry Grove, Jagged Peaks, Sulfur Caves and Dappled Forest.
• Kept up to date with Minecraft. Sulfur Caves needs Minecraft 26.2 and Dappled Forest needs 26.3. Older servers skip them automatically.
• New phases reach existing servers. When a new phase ships it is added to your phase order without touching the changes you have made.
• A boss for every phase, each with configurable health, size, damage, minions, drops and reward commands.
• Phase progress on a boss bar or the action bar. Players choose with /ob bossbar and /ob actionbar.
• Treasure chests in common, uncommon, rare and epic rarities.
• Holograms above the magic block, with no hologram plugin needed.
• Phase requirements: gate a phase behind island level, money, bank balance or a permission.
• Phase commands: run commands when a phase starts or ends, or the first time an island completes it.
• Custom content: MythicMobs mobs, and ItemsAdder and Nexo custom blocks, can be used in phases.
• Works with BentoBox addons such as Level, Challenges, Warps, Likes and Bank.

⚙️ Installation

AOneBlock requires the BentoBox plugin.

1. ⬇️ Download and install BentoBox.
2. 📂 Place the AOneBlock jar into plugins/BentoBox/addons.
3. ▶️ Start the server. A data folder is created with config.yml and the phase files.
4. 🔑 Log in and type /ob to begin!

To customize:

1. ⛔ Stop the server.
2. 🛠️ Edit config.yml or any of the phase .yml files.
3. 🗑️ Delete the generated worlds if your changes affect world generation.
4. 🔄 Restart the server.

💬 Commands

• Player command: /ob
• Admin command: /oba
• Help: /ob help or /oba help

📖 See the BentoBox Docs for full setup, placeholders and permissions.

❓ FAQ

Q: What phases are there? A: There are 21: Plains, Underground, Winter, Ocean, Jungle, Swamp, Dungeon, Desert, The Nether, Plenty, Desolation, Deep Dark, The End, Lush Caves, Dripstone Caves, Mangrove Swamp, Meadow, Cherry Grove, Jagged Peaks, Sulfur Caves and Dappled Forest.

Q: How many blocks does a single run have? A: 16,000. Enough to keep players busy for days or weeks!

Q: What happens after finishing all the phases? A: The cycle begins again, starting back at Plains.

Q: A boss has appeared and I can't mine my block! A: The magic block is sealed until the boss is defeated. Only players can hurt it. If it is too much, retreat. The boss leaves after a few seconds with nobody around, and it is a little weaker each time you lose.

Q: Can I play without bosses? A: Yes, if your server admin turns them off. Admins: set island.phase-finales: false in config.yml.

Q: Why do I keep falling and dying? A: There are tricks to surviving, but it can be difficult! Build yourself some space so you don't fall.

Q: I can't catch the blocks when I mine them! How do I do that? A: You can't catch them all, but it is an infinite block!

Q: Why do certain blocks spawn more often than others? A: It's random. Admins can set the relative probability in the phase files, and can also force specific blocks at specific times. (Look out for the sponge!)

Q: How do I know which is the magic block? A: Hit it and it gives off green particles. It is at the center of your island.

Q: My magic block is no longer there! How do I get another one? A: Use /ob respawnblock, or place a block at the original location.

Q: My magic block is liquid! How can I mine it? A: Use a bucket.

Q: Which mobs can spawn? A: Each phase has different mobs. Be careful, because they might push you off!

Q: I have no chance to react to hostile mobs spawning! A: Be prepared! Hostile mobs make a noise before they spawn. Mine from a distance and build defenses.

Q: When mobs spawn, my defenses are destroyed! Why? A: Mobs clear space when they spawn. Blocks in their way break and drop. Design your defenses to allow for it.

Q: Do chests spawn? A: Yes! They appear randomly and match the current phase. There are common, uncommon, rare and epic chests. Sparkly chests are valuable!

Q: Can I reach the Nether or the End? A: You can reach the vanilla Nether. The End is a phase, not a dimension.

Q: What is the end goal? A: Whatever you want it to be.

🧾 Phase configuration

Phases live in the phases folder. Each phase has two files: one for blocks, mobs and settings, and one for chests. The number at the start of the file name is the block count at which the phase begins.

0_plains.yml documents every option in full.

Commands

Commands run as the console, or as the player if prefixed with [SUDO]. Placeholders: [island], [owner], [player], [phase], [blocks], [level], [bank-balance], [eco-balance].

start-commands:
  - 'give [player] WOODEN_AXE 1'
  - 'broadcast [player] just started OneBlock!'
end-commands-first-time:
  - 'broadcast [player] has completed the [phase] phase for the first time.'

Requirements

requirements:
  bank-balance: 10000
  level: 10
  permission: ready.for.battle

Finale (the boss)

finale:
  boss: GIANT
  name: '<dark_green>The Colossus'
  health: 100
  scale: 0.5
  damage: 4
  minions:
    ZOMBIE: 2
  drops:
    IRON_INGOT: 8
    BREAD: 8
  first-time-commands:
    - 'broadcast [player] has defeated The Colossus!'

Other options are speed, void-respawn, warning and commands.

Chests

Fill a chest in game, look at it, and run /oba setchest <phase> <rarity>.

🔧 Compatibility

We focus on the latest Minecraft version, and earlier versions are supported too. Get older builds from the GitHub Releases page or the Customize tab of the BentoBox download site.

💬 Support and contributions

• Questions or need help? Join the Discord support server.
• Found a bug or have an idea? Open an issue on GitHub.

This is a community-driven project, created by volunteers. Thanks for being part of the journey!