Archimedes Mod
by INDOS_09
Archimedes Mod adds Nether castles hidden under the sea, sunken shipwrecks with pirate loot, and custom weapons and music discs to Forge 1.20.1 worlds.
What it does
Players can find a large Lava Castle, a perilous structure with custom loot tables, and search its chests for an exclusive second Music Disc. Ocean shipwrecks hold their own rewards, including a unique Upgrade Template and the Pirate Sword Upgrade Template tied to the pirate theme, along with a Caribbean-themed Pirate Music Disc. Combat in these places is meant to be high-stakes, with rewards for exploring across the dimensions.
Archimedes Mod is a server-side mod for Forge on Minecraft 1.20.1. Only the server needs it, so players join without installing anything. The mod is released for 1.20.1 only, with the latest Forge file, 4.1.0, published on 2026-09-13 after a first release on 2026-07-22. It is not open source and is licensed as All rights reserved. Several dependencies are required: Amplified Nether, Chipped, Cracker's Wither Storm Mod, Create, Create: Copycats+ and Mowzie's Mobs.
Key features
Lava Castle structure
A large underwater Nether castle with custom loot tables and valuable treasures inside its chests.
Pirate shipwrecks
Ocean shipwrecks contain pirate loot, a unique Upgrade Template and a rare Pirate Music Disc.
Custom weapons and discs
Custom weapons and an exclusive second Music Disc add to the gear and music found in the world.
Gear progression
The Upgrade Template found in sunken shipwrecks expands how players upgrade their equipment.
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 6
Use cases
Exploring deep waters
Players who travel across oceans can reach the sunken castles and shipwrecks that hold most of the mod's content.
Who it’s for: Adventure players who want structures to explore and rewards to collect on Forge 1.20.1 servers. Server owners can add it to a pack that already runs the listed dependencies.
How it compares
Pirates Awakened is a Forge mod for 1.20.1 that needs both client and server, and it is released under the MIT License. Sea Legend is another Forge 1.20.1 option that needs both client and server, licensed as All rights reserved. Archimedes Mod differs by running server-side only, so players do not have to install it.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Archimedes Mod | Forge | 1.20.1 | Server-side only | 2026-09-13 |
| Pirates Awakened | Forge | 1.20.1 | Client and server | 2025-04-09 |
| Sea Legend | Forge | 1.20.1 | Client and server | 2026-10-03 |
Questions
Does Archimedes Mod need to be installed on the client?
Which dependencies does Archimedes Mod require?
Which Minecraft version does Archimedes Mod support?
In the catalog
Archimedes Mod is one of 8,515 World generation mods on ModsFinder, and one of 5,058 World generation mods for Forge. 34,764 mods support Minecraft 1.20.1.
Similar mods
What the author says
Archimedes Mod is an adventurous content expansion for Minecraft Forge 1.20.1 designed to overhaul progression, add high-stakes combat, and reward exploration across every dimension.
Official listing
- Modrinth page
- modrinth.com/mod/archimedes_mod
- Owner
- INDOS_09
- Published
- 2026-07-22
- Updated on Modrinth
- 2026-09-13
- Facts verified
- 2026-10-15