Opac-Towny
by YanS27
Opac-Towny, a NeoForge nation-management mod for multiplayer servers, lets players found nations with government hierarchies, shared economies and territorial wars.
What it does
Players found a nation and set up its government: a Mayor holds absolute authority over settings, leadership transfer and disbanding the nation, while a Deputy Vice-Mayor handles territory, player recruitment and role assignment. A Finance Minister runs the nation's treasury and caps how much can be withdrawn each day, while a Defense Minister enlists soldiers and approves declarations of war. Standard citizens hold basic nation rights, and dedicated combatants can take part in warfare.
Opac-Towny rests on Open Parties and Claims (OPAC), wires into the Numismatics economy and Xaero's Maps, and turns ordinary land claims into a geopolitical simulator. Nations can levy automated taxes, take on national debt, form diplomatic treaties and set granular per-chunk access rules. Opac-Towny runs on client and server, so the server and every player need it. Files cover 1.21.1 – 1.21.11 under All rights reserved, and the latest NeoForge file is 1.0.2 for 1.21.11.
Key features
Government hierarchy
Nations are organized into offices for mayor, deputy, finance and defense, each with its own permissions.
Nation treasury
The treasury is managed by a finance minister and limits daily withdrawals, backing the automated tax system.
Diplomacy and debt
Nations can accumulate national debt and form diplomatic treaties with one another.
Per-chunk access rules
Access to individual chunks can be configured, controlling block breaking, placing, doors, trapdoors and gates.
Gallery
Compatibility
Latest build for each game version and loader.
1.21.x11 of 11 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Multiplayer nation servers
Server owners can run a shared world in which groups of players build nations and compete for territory.
Who it’s for: Server owners and groups of players who want a politics and territory layer on top of land claiming in a multiplayer world.
How it compares
ForgeTowns is also a NeoForge mod, open source under the GNU General Public License v3.0 only, with files for 1.21.1 – 1.21.5. Slipboot is open source under the MIT License, works on NeoForge for 1.21 – 1.21.8, and is client and server. Nation's Roots is a NeoForge client and server mod for 1.21.8 only and is not open source. Opac-Towny is not open source and is published under All rights reserved.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Opac-Towny | NeoForge | 1.21.1 – 1.21.11 | Client and server | 2026-09-14 |
| ForgeTowns | NeoForge | 1.21.1 – 1.21.5 | Client and server | 2025-04-18 |
| Slipboot | NeoForge | 1.21 – 1.21.8 | Client and server | 2025-10-05 |
| Nation's Roots | NeoForge | 1.21.8 | Client and server | 2025-11-22 |
Questions
Does Opac-Towny need Open Parties and Claims?
Does the server need Opac-Towny?
Which versions are supported?
In the catalog
Opac-Towny is one of 29,952 Game mechanics mods on ModsFinder, and one of 12,140 Game mechanics mods for NeoForge. 19,862 mods support Minecraft 1.21.11.
More from YanS27
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What the author says
OPACTowny is an advanced civilization and nation-management mod designed for multiplayer servers. Built on top of Open Parties and Claims (OPAC) and deeply integrated with the Numismatics economy and Xaero's Maps, it elevates standard land claiming into an immersive geopolitical simulator. Players can found nations…
Official listing
- Modrinth page
- modrinth.com/mod/opac-towny
- Owner
- YanS27
- Published
- 2026-08-31
- Updated on Modrinth
- 2026-09-14
- Facts verified
- 2026-10-15