Potion of Infestation Backport
by JustErikSK
Potion of Infestation Backport brings the Infestation potion from later Minecraft releases to 1.20 – 1.20.6, along with its Infested effect.
What it does
The Infested effect can be applied to players, vanilla mobs and modded mobs alike. An affected entity has a configurable chance to spawn silverfish when it takes damage, and the default spawn count is between 1 and 3 silverfish. The mod is compatible with backported mobs such as armadillos, so those mobs can carry the effect too.
The backport targets the Forge, Fabric and NeoForge loaders, with files covering 7 release versions in the range 1.20 – 1.20.6. The mod is released under the MIT License, so its source code is public and issue tracking is available. It is used in client and server play, so the server and every player need it installed.
Key features
Infested effect
The Infested effect is restored so entities can carry it during play.
Silverfish spawns
Affected entities spawn silverfish when they take damage, with a configurable chance and a default of 1 to 3 silverfish.
Configurable spawn chance
The chance of silverfish spawning and the number spawned can be adjusted in the mod settings.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Mob-heavy survival
Servers that add many mobs can use the effect to give fights an extra consequence without changing vanilla mob behavior.
Who it’s for: Players and server owners who want the Infestation potion from later versions, or a configurable silverfish reaction when entities are hurt.
How it compares
Infestation Potion Mod is a Fabric option covering 1.20.1 – 1.20.6, released under the MIT License and not open source. Potions backport is published for Fabric and Forge on 1.20.1 and is released under All rights reserved, so its code is not open source. Potion of Infestation Backport differs by adding the Forge, Fabric and NeoForge loaders with the MIT License.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Potion of Infestation Backport | Fabric, Forge and NeoForge | 1.20 – 1.20.6 | Client and server | 2026-05-20 |
| Infestation Potion Mod | Fabric | 1.20.1 – 1.20.6 | Client and server | 2025-02-08 |
| Potions backport | Fabric and Forge | 1.20.1 | Client and server | 2026-06-15 |
Questions
Must the mod be installed on the server as well?
Which loaders does the mod support?
Can the spawn chance be changed?
In the catalog
Potion of Infestation Backport is one of 17,631 Equipment mods on ModsFinder, and one of 8,894 Equipment mods for Fabric. 11,154 mods support Minecraft 1.20.6.
More from JustErikSK
Similar mods
What the author says
Entities affected by the Infested effect have a chance to spawn silverfish when they take damage.
Official listing
- Modrinth page
- modrinth.com/mod/potion-of-infestation-backport
- Owner
- JustErikSK
- Published
- 2026-03-04
- Updated on Modrinth
- 2026-05-20
- Facts verified
- 2026-10-15