Random World Blocks
by Hreggi5
Random World Blocks, a Forge mod for 1.20.1, swaps the terrain around the player for randomly chosen blocks as new chunks load.
What it does
Blocks around the player are replaced with random block types as the world is explored. Only nearby blocks are randomized, so the rest of the terrain stays as it was and gameplay remains manageable. Blocks placed by players are left untouched, so builds keep their intended shape while the surroundings change.
Almost any block type can appear, from rare ores and decorative blocks to leaves and other unusual entries, and special blocks such as end portal frames are excluded from replacement. The result is a chaotic world where a single step can reveal diamonds, dirt, obsidian or cake. The mod is meant for players who want unpredictable survival or a fresh look at a familiar seed.
Installation needs Minecraft Forge for 1.20.1 and the mod file placed in the mods folder. Servers that run it need every player to install it too. It works with existing worlds. Random World Blocks is released under the MIT License and is not open source.
Key features
Dynamic randomization
Nearby blocks are swapped for random ones over time as new chunks come into range.
Player builds stay intact
Blocks placed by players are not replaced, so structures remain safe while the terrain changes.
Wide block coverage
Nearly every block type can be chosen, including rare ores, decorative blocks and leaves.
Custom exclusions
Special blocks such as end portal frames are protected from replacement.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Chaotic survival runs
Players can take on a survival world where the terrain keeps changing underfoot.
Revisiting an old seed
A familiar world looks new when its blocks are randomly swapped around the player.
Who it’s for: Players looking for unpredictable survival on Forge 1.20.1, whether in single-player or on a server.
How it compares
Random Stuff 3000 is a Forge option for 1.20.1 that runs on client and server and is licensed as All rights reserved. Minecraft Chaos Edition is also for Forge 1.20.1 but is server-side only, so players join without installing it. New Random Features covers 1.20.1 – 1.20.4 under the MIT License and runs on client and server, while Random World Blocks targets 1.20.1 alone.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Random World Blocks | Forge | 1.20.1 | Client and server | 2025-08-10 |
| Random Stuff 3000 | Forge | 1.20.1 | Client and server | 2026-08-17 |
| Minecraft Chaos Edition | Forge | 1.20.1 | Server-side only | 2025-03-24 |
| New Random Features | Forge | 1.20.1 – 1.20.4 | Client and server | 2025-03-24 |
Questions
Does Random World Blocks need to be installed on the server?
Does Random World Blocks work with an existing world?
Which Minecraft version does Random World Blocks support?
In the catalog
Random World Blocks is one of 7,555 Cursed mods on ModsFinder, and one of 3,426 Cursed mods for Forge. 34,764 mods support Minecraft 1.20.1.
More from Hreggi5
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What the author says
Random World Blocs brings pure chaos and fun to Minecraft by randomly replacing blocks around you as you walk. Dynamic Randomization – Every time you approach new chunks, the surrounding blocks are swapped with random ones from the game. \ Performance-Friendly – Only nearby blocks are randomized to keep gameplay…
Official listing
- Modrinth page
- modrinth.com/mod/random-world-blocks
- Owner
- Hreggi5
- Published
- 2025-08-10
- Updated on Modrinth
- 2025-08-10
- Facts verified
- 2026-10-15