IslandCore

One shared sky, everyone gets their own island.

IslandCore is a skyblock-style island management system that runs entirely inside a single custom dimension. Instead of teleporting every player into their own private world (the way most skyblock plugins/mods work), IslandCore places every island side-by-side on one shared grid — same performance profile as a normal world, same shared dimension, zero per-player world overhead.

Built from the ground up for Minecraft 1.21.1 (Fabric), IslandCore is fully playable with plain text commands — no client mod required. If you want a polished graphical interface instead, check out the optional companion mod IslandCore Client (linked below).

⚠ Note:

The screenshots show IslandCore (server-side) working together with the optional client-side Fabric mod (IslandCore-Client), which provides a more visually polished graphical interface for IslandCore's commands. IslandCore can also be used independently through commands.

✨ Key Features

🏝️ Island System

• Every player gets their own island inside islandcore:islands, a dedicated dimension generated on a grid — no per-player dimension creation, no extra world folders piling up on disk.
• Islands can be resized/upgraded — upgrading only ever generates new terrain rings outward; your existing builds are never touched or regenerated.
• Full member system: invite, accept, trust, untrust, and kick, with three roles (Owner / Trusted / Member) that control what each person can and can't do on the island.
• Configurable per-island settings: toggle fire spread, PvP damage, and mob/entity damage independently for every island.

🌍 Biome Control

• Change your island's biome on demand with /island biome.
• Biomes are organized into configurable tiers (Base / Adventurer / Legendary by default, fully editable via config) so server owners can gate exotic biomes behind permission nodes or ranks.
• Biome changes apply live, chunk-by-chunk, with an in-world visual refresh — no reconnect required.
• A safety cooldown (configurable, 7 days by default) prevents biome-change spam.

🛡️ Protection & Safety

• Explosion protection and configurable fire-spread protection, per island.
• Void rescue: falling into the void inside the islands dimension no longer kills you — it teleports you straight back to your island's home (or Spawn Island if you don't have one yet). Fully configurable, can be disabled server-wide.
• Safe-landing validation on /island sethome — you can no longer set a home in an unsafe spot that would drop you into a fall-damage death later.

🚀 Teleportation

• /island home, /spawn, /rtp (random teleport with blacklist/whitelist support), and a dedicated Farming dimension teleport — each with its own configurable cooldown tier.
• Every teleport uses a 3-second, cancel-on-move visual countdown, exactly like vanilla ender pearl / totem-style warmups players already expect.

🎁 Starter Experience

• Configurable starter kit handed out automatically on a player's very first join (comes with a wood stack + flint and steel by default — fully editable).
• New players are automatically redirected to the Spawn Island on first join, with a welcome message.

🌌 Dimension Manager

• Server admins can create, list, inspect, delete, and regenerate custom runtime dimensions on the fly — no server restart required for creation, thanks to the Fantasy dimension library with full restart-recovery support.
• Choose a generator style per dimension: Overworld-like, Nether-like, End-like, or a flat void — each with an optional custom seed.
• A separate vanilla world reset queue lets admins schedule Overworld/Nether/End regeneration for the next manual restart (vanilla dimensions can't be safely regenerated live, so this is handled as a deliberate, confirmed, restart-triggered operation).

🔧 Admin Tools

• A full /island admin command tree: inspect and manage any player's island, resize or relocate Spawn Island, and review detailed technical breakdowns (coordinates, member list, entity counts, timestamps) for any island on the server.
• Every destructive action (island deletion, dimension deletion/regeneration, vanilla world reset) requires an explicit two-step confirmation with a visible countdown — no accidental data loss.

🔌 Integrations (optional, adapter-based)

• LuckPerms support out of the box, with a built-in fallback permission provider if LuckPerms isn't installed.
• Cobblemon entity detection (namespace-based, so it won't break if Cobblemon's internals change).
• Designed from day one for future economy and Warpstone integrations — none of IslandCore's core systems have a hard dependency on any external mod.

🖥️ Optional Companion: IslandCore Client

Prefer clicking buttons over typing commands? Install IslandCore Client alongside this mod (or tell your players to — it's entirely optional) for a full graphical interface covering every feature above: island dashboard, settings, member management, biome picker, teleports, and a complete admin panel. IslandCore itself works perfectly with commands alone — the client is a pure quality-of-life add-on that never becomes required.

📋 Requirements

📖 Commands Overview

/island create                     Create your island
/island info                       View your island's stats
/island home | /island sethome     Teleport to / set your home
/island upgrade                    Expand your island to your max allowed size
/island settings <setting> <bool>  Toggle firespread / pvp / mobdamage
/island biome <biome>              Change your island's biome
/island invite|accept|trust|untrust|kick   Manage island members
/island limits                     Check your size/cooldown limits
/island delete                     Permanently delete your island (2-step confirm)
/island admin ...                  Full admin subtree (see docs)
/spawn                             Teleport to the Spawn Island
/rtp                               Random teleport (config-gated)
/dimension create|list|info|delete|regenerate   Runtime dimension management
/dimension vanilla regenerate|list|cancel       Vanilla world reset queue

⚙️ Configuration

All server behavior is configurable through JSON files under config/islandcore/, including biome tiers, RTP blacklist/whitelist, farming dimension settings, spawn settings, starter kit contents, and void rescue toggles. No config file editing is required to get started — sensible defaults are generated automatically on first launch.

🗺️ Roadmap

• Portal linking between the islands dimension and other dimensions
• General feature-toggle system, rolled out alongside upcoming economy and Warpstone integrations
• Configurable island type templates

🐛 Found a bug? Have a suggestion?

Please report issues on the [issue tracker link] — include your server log and steps to reproduce whenever possible. Feature requests are always welcome.

IslandCore is under active development. Version numbers follow semantic versioning; check the changelog for what's new in each release.