Compatibility
Minecraft: Java Edition
1.21.10
1.21.1
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A big QOL and management update for Lattice. This release introduces a configurable in-game rulebook that players must accept before playing, a major command refactor with extended admin controls, improved config/date handling, and several compatibility and reliability fixes.
Short summary
- New: Enforceable Rulebook — display rules as an in-game book and require players to accept them.
- New: Powerful
/latticeadmin command with subcommands for config, MOTDs, illegal/allowed mods, pvp, rules, nick, status, and open dates. - Improved: Now supports per-dimension open dates (server, nether, end).
- Improved: Illegal-mod detection now supports an allowlist and improved mod/resource-pack sharing.
- Client+Server: Lattice must be installed on both server and client for full functionality (rules flow, mod sharing).
- Build & compatibility: Updated mappings/deps/build tooling for Minecraft 1.21.10 mappings and modern APIs.
Breaking changes / upgrade notes (must-read)
- Backup your existing config.json before upgrading.
- New
rulesarray expects JSON text components. See the README example for formatting. If you add rules, players will be prompted to accept them on join. - The mod must be installed on both server AND client for full rulebook and mod-sharing features to work.
- If you have automation or scripts that rely on the old
/latticesubcommand layout, update them: the admin command was expanded and refactored. - If you build Lattice from source, update your toolchain to match the versions in gradle.properties (Gradle 9.2, updated fabric/neoForge/parchment versions) and increase JVM heap if needed.
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ReleaseVersion number
1.3.0Loaders
Game versions
1.21.10Environment
Client and server, required on both
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24Publication date
November 12, 2025 at 5:14 PMPublisher
lumentae
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