Extra Effects
by backslackes
Extra Effects is a NeoForge mod that adds custom potion effects, each with its own recipe, for players and server owners on 1.21.1.
What it does
Potion effects added by the mod are brewed from recipes that ship with it, and they behave like the vanilla effects players already know. Several effects change movement or reach: one lets a player climb walls, another lengthens how far a player can interact with blocks or entities, and another makes travel through cobwebs and honey berry bushes faster. A further effect grants creative flight, which suits utility modpacks that need flight without the creative mode.
Other effects trade stats for speed. One raises agility while lowering maximum health, and the effect ends after its duration like any other status effect. The mod also includes an explosive form that makes a player's death detonate, with larger mobs leaving larger craters. Because these effects are brewed items, a server can rely on them in custom progression without new commands.
Extra Effects runs on client and server, so the server and every player need it. Files are published for NeoForge only, for 1.21.1, with 1.1.0 as the latest file dated 2026-08-10. The code is open source under the MIT License.
Key features
Brewable potion effects
Each added effect is brewed from a recipe included with the mod, so players craft them rather than finding them in loot.
Reach effects
Two effects increase how far a player can reach blocks or entities, one for block interaction and one for entity interaction.
Movement effects
Spider Climb lets a player climb walls, and Unimpeded Travel speeds movement through cobwebs, honey berry bushes and similar blocks.
Creative flight effect
A potion grants creative flight for its duration, which lets players fly in survival worlds.
Rabbit Form
The effect trades maximum health for a large gain in agility, and it ends when its duration runs out.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Utility modpacks
Pack makers add the effects to custom progression, giving players movement and reach tools without extra commands.
Adventure maps
Map builders can hand players brewed effects that change how they traverse a built course.
Who it’s for: Utility modpack makers and server owners who want brewable movement, reach and flight effects on NeoForge 1.21.1, installed on both the server and the client.
Questions
Does Extra Effects need to be installed on both sides?
Which loader does Extra Effects support?
Can the creative flight effect be used in survival?
More from backslackes
Official listing
- Modrinth page
- modrinth.com/mod/extra-effects
- Owner
- backslackes
- Published
- 2026-07-13
- Updated on Modrinth
- 2026-08-10
- Facts verified
- 2026-10-15