Mod Block Swap

Block Swap, configurable block replacement

Block Swap is a lightweight Minecraft Java mod for Forge that lets you define a source block and replace it with another through its configuration. The replacement works during world generation and when blocks are placed in an already active world, making it useful for customizing a Minecraft server without editing terrain by hand.

It can help unify duplicate ores, woods, or other blocks added by different mods. Block state properties are remapped when the target supports them, helping preserve details such as orientation. The configuration reloads with each world, while the author reports no meaningful performance impact. At BoxToPlay, we see it as a practical tool for keeping large modpacks consistent.