Simple Block Replacer
🟡 Updated this year⚠️ Install Order · 2 steps
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🔍 Analysis
- 👍 0.5% endorsement rate
- 🏆 #6 of 8 management mods in this game by downloads
📋 About This Mod
## <span style="color:#e67e23">Due to a lack of time, I am no longer updating this mod</span> **Block Replacer** is a mod that lets you replace blocks in the world (upon chunk generation) with another block. The main intention of this mod is block deduplication. Imagine you have Biomes O' Plenty and Regions Unexplored at the same time. Well, you'd have 2 different sets of multiple wood types which is inconvenient, with this mod, you can only keep one set by replacing the other. All info on how to replace a block is located in the `blockreplacer.json5` config. **NOTE:** This mod has no retroactive capibilities, it will only replace newly placed/generated blocks since it's install. ## **Performance** I tested a config that replaces all stone blocks in the world with blocks of diamond and the performance hit was negligable. This is partially due to the fact that the mod intercepts the methods that sets the blocks during chunk generation and do the replacement directly there so it's almost as if nothing changed. ## **Modpack Usage** You may include this mod into your own modpacks as long as it is distributed through CurseForge, Modrinth, or any other recognized mainstream modding platforms that may exist in the future. ## **Is this not just (https://modrinth.com/mod/block-swap)?** Not quite. This mod is significantly simpler in implementation as all it does is replace blocks. It doesn't have a state swapper, or an ID remapper. Currently, Block Swap is getting a revamp for 1.21.1 but since the Author is busy and the scope of the mod has increased, it will be quite a while before that happens. I would like to state that this is **not a port of blockswap nor is it a good alterative for it.** I only made this mod because I needed a block replacer.
## Due to a lack of time, I am no longer updating this mod
Block Replacer is a mod that lets you replace blocks in the world (upon chunk generation) with another block. The main intention of this mod is block deduplication. Imagine you have Biomes O' Plenty and Regions Unexplored at the same time. Well, you'd have 2 different sets of multiple wood types which is inconvenient, with this mod, you can only keep one set by replacing the other.
All info on how to replace a block is located in the `blockreplacer.json5` config.
## Performance I tested a config that replaces all stone blocks in the world with blocks of diamond and the performance hit was negligable. This is partially due to the fact that the mod intercepts the methods that sets the blocks during chunk generation and do the replacement directly there so it's almost as if nothing changed.
## Modpack Usage You may include this mod into your own modpacks as long as it is distributed through CurseForge, Modrinth, or any other recognized mainstream modding platforms that may exist in the future.
## Is this not just (https://modrinth.com/mod/block-swap)?** Not quite. This mod is significantly simpler in implementation as all it does is replace blocks. It doesn't have a state swapper, or an ID remapper. Currently, Block Swap is getting a revamp for 1. 21. 1 but since the Author is busy and the scope of the mod has increased, it will be quite a while before that happens. I would like to state that this is not a port of blockswap nor is it a good alterative for it.** I only made this mod because I needed a block replacer.
📊 Mod Details
- Game
- Minecraft Mods
- Author
- RedCraft86
- Version
- 1.0.4-1.21.1
- Downloads
- 610
- Endorsements
- 3
- Category
- management
- Created
- 1/29/2026
- Updated
- 4/1/2026
- Game Versions
- 1.21.1
- Tags
- management, utility, worldgen
🔧 How to Install Minecraft Mods Mods
Download from Modrinth. Use Prism Launcher or drop into your mods folder.
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❓ Frequently Asked Questions
Which Minecraft Mods versions does Simple Block Replacer support?
The author lists 1.21.1. Other versions may work but are untested by the author.
What is the latest version of Simple Block Replacer?
Version 1.0.4-1.21.1, published 2026-04-01 with 610 downloads recorded at the source.
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