QuickMäth
by JFronny
QuickMäth is a Fabric mod that swaps out standard math routines for deliberately wrong versions, so the game misbehaves in unusual ways.
What it does
Minecraft relies on math methods nearly everywhere calculations are needed, and trigonometry drives parts of the codebase such as rendering. QuickMäth replaces these methods with incorrect alternatives, which produces visible corruption in the game. Perlin and Simplex noise routines used for terrain generation are among the targets, so the changes can reach the shape of a world as well as its appearance.
The mod is a joke or experiment rather than a tool for everyday play. Its replacements are meant to corrupt things that players care about in their worlds, and the more generic math option can even stop a game from loading worlds that were not generated completely. Installation requires LibJF, and Mod Menu is optional for configuring the replacements in game. Files are published for Fabric only, across 36 release versions 1.16.4 – 26.3, and either side can run it while neither needs it. The mod is released under the MIT License and is open source.
Key features
Incorrect math replacements
Standard math methods are swapped for alternatives that return wrong results, producing odd and unpredictable behavior.
Rendering corruption
Because trigonometry is used across the codebase, the wrong results show up in things such as how the world is drawn.
Terrain noise changes
Perlin and Simplex noise methods used for terrain generation can be replaced, altering the shape of newly generated land.
Selectable corruption levels
A more generic math option is included, and it is strong enough to prevent worlds that were not fully generated from loading.
Gallery
Compatibility
Latest build for each game version and loader.
26.x5 of 5 versions with builds
1.21.x12 of 12 versions with builds
1.20.x7 of 7 versions with builds
1.19.x5 of 5 versions with builds
1.18.x3 of 3 versions with builds
1.17.x2 of 2 versions with builds
1.16.x2 of 2 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Use cases
Chaotic personal worlds
Players who want an unpredictable single-player experience can enable the replacements and see how the game reacts.
Who it’s for: Players looking for a deliberately broken, experimental game, and modpack makers who want a corruption effect in a pack. Because the replacements can damage worlds, it is wise to keep them away from saves that matter.
Questions
Does QuickMäth need LibJF?
Can a server run QuickMäth without players installing it?
Which Minecraft versions does QuickMäth support?
Can the corruption damage an existing world?
In the catalog
QuickMäth is one of 7,555 Cursed mods on ModsFinder, and one of 4,235 Cursed mods for Fabric. 8,071 mods support Minecraft 26.3.
More from JFronny
Similar mods
What the author says
QuickMäth allows you to break math methods in minecraft by enabling replacements for: - The standard math methods (used almost everywhere where math is needed) - Trigonometry (which is also used across the codebase and affect things like rendering) - Perlin & Simplex noise methods (used in terrain generation)…
Official listing
- Modrinth page
- modrinth.com/mod/quickmath
- Owner
- JFronny
- Published
- 2020-12-12
- Updated on Modrinth
- 2026-09-15
- Facts verified
- 2026-10-15