Lost World
by Oednu_
Lost World adds a hidden dimension that players reach by digging into the normal world, along with a Forge Hammer, a new crafting path and the Siphon enchantment.
What it does
The mod puts a strange second world beneath the ordinary terrain, meant to be found by exploring places that a player has not yet visited. It generates through TerraBlender, which is required and must be installed next to Lost World. The content is still being reworked, so the list of blocks, recipes and tools may change between releases.
Lost World also introduces a new tool-based crafting route. Redstone and lapis lazuli are joined by new resources that serve as components, and the Forge Hammer is a new weapon and crafting tool that is used to build new blocks. The mod is client and server, so the server and every player need it. Files are published for Forge and NeoForge for game versions 1.20.1 – 1.21.1.
Key features
Hidden lost world
A second world generates below the normal terrain and can be reached by digging, rewarding players who explore unfamiliar ground.
Forge Hammer
A new tool and weapon used in crafting, with properties that are still being adjusted in later updates.
Siphon enchantment
Damage dealt to enemies can heal the wielder by a random chance, which helps during long fights.
Advancements
Advancements for the mod were added in a later update and are part of the current release.
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
How it compares
Warp Siphons is a Forge-only mod for 1.20.1 that runs client and server and is published under All rights reserved, so it does not cover NeoForge. Lost River is open source under the MIT License and covers Forge and NeoForge for 1.20.1 – 1.21.1, making it the option for players on those loaders. Big Lost City spans Fabric, Forge and NeoForge for 1.20.1 – 26.1.2 under All rights reserved, which fits a wider loader choice.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Lost World | Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2026-02-04 |
| Warp Siphons | Forge | 1.20.1 | Client and server | 2025-10-06 |
| Lost River | Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2025-02-16 |
| Big Lost City | Fabric, Forge and NeoForge | 1.20.1 – 26.1.2 | Client and server | 2026-05-18 |
Questions
Does Lost World need TerraBlender?
Does the server need Lost World?
Which game versions does Lost World support?
In the catalog
Lost World is one of 8,515 World generation mods on ModsFinder, and one of 5,058 World generation mods for Forge. 32,366 mods support Minecraft 1.21.1.
Similar mods
What the author says
In Minecraft there are secrets that are hidden from the normal world you play in, however as you explore this world you will find new places not there before and soon enough you become desperate to get in and explore this new place. Dig into this strange and new world far from home and soon to be home. The all new…
Official listing
- Modrinth page
- modrinth.com/mod/lost-world
- Owner
- Oednu_
- Published
- 2024-06-30
- Updated on Modrinth
- 2026-02-04
- Facts verified
- 2026-10-15