Robot Legion
by mnt_games
Robot Legion adds steampunk robot workers and combat robots that players build, equip and command through three boss dungeons.
What it does
Players assemble a legion of steampunk-themed humanoid robots. Six worker classes automate chores such as mining, lumberjacking, farming, hauling, crafting and animal handling, while combat robots fight alongside the player. The Range Setter marks a custom work area for each worker, and players can then give it orders like Follow, Stay, Work or Attack. Its state can be checked through the Robot Tracker tablet.
Progression runs through three boss dungeons. Bosses drop unique Trophies and Boss Cores, which are used to craft progressively stronger gear. A Trophy Block can be placed to collect more cores over time from a linked chest. Rare parts such as Scrap Metal, Circuit Boards and Robot Cores come from trading with engineer villagers, who can be found in Engineer Huts in plains and forest biomes. Regular villagers can be converted with an Engineer Certificate. Two locator items help find an Engineer Hut and the nearest dungeon.
Robot Legion requires Fabric API. Files are published for Fabric only, for 1.21.1, and the latest build is 1.1.0 for 1.21.1. Installation covers the server and each player's game. The code is under the MIT License, but the project is not open source.
Key features
Six worker classes
Miner, Lumberjack, Farmer, Porter, Crafter and Animal Handler each take over a specific chore.
Combat robots
A Swordsman wields an iron-tier sword as a melee anchor, and a Tesla Trooper fires chain lightning from dual-arm gauntlets at mid range.
Porter drone
A hovering Porter carries chests and barrels and has 27 storage slots of its own.
Boss dungeons
Three dungeon tiers hold bosses that drop the Trophies and Boss Cores needed for later gear.
In-game guidebook
A guidebook inside the game explains the robots, blocks and items the mod adds.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Required by 1 mod
How it compares
Programmable robots is a Fabric mod for 1.21.2 – 1.21.10 under a custom license and is not open source, so it does not cover the same 1.21.1 build. Lovely Robot: Legacy is an MIT-licensed, client and server mod for Fabric, Forge and NeoForge on 1.21.1, with a different feature set. Lovely Robot: Tribute uses the same loaders and version, under the MIT License.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Robot Legion | Fabric | 1.21.1 | Client and server | 2026-07-02 |
| Programmable robots | Fabric | 1.21.2 – 1.21.10 | Client and server | 2025-10-20 |
| Lovely Robot: Legacy | Fabric, Forge and NeoForge | 1.21.1 | Client and server | 2026-07-04 |
| Lovely Robot: Tribute | Fabric, Forge and NeoForge | 1.21.1 | Client and server | 2026-07-04 |
Questions
Does Robot Legion need Fabric API?
Does the server need Robot Legion?
Which game versions does Robot Legion support?
How are engineer villagers found?
In the catalog
Robot Legion is one of 8,499 Technology mods on ModsFinder, and one of 4,201 Technology mods for Fabric. 32,366 mods support Minecraft 1.21.1.
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What the author says
Build, command, and fight alongside a steampunk-themed legion of humanoid robots. Automate your worker chores, deploy combat squads, breach three tiers of boss dungeons, and trade with engineer villagers for rare parts. Robot Legion is a content-rich Fabric 1.21.1 mod with worker robots, combat robots, boss fights…
Official listing
- Modrinth page
- modrinth.com/mod/robot-legion
- Owner
- mnt_games
- Published
- 2026-05-11
- Updated on Modrinth
- 2026-07-02
- Facts verified
- 2026-10-15