Mas Effects
by MasUN0
With Mas Effects installed, combat visuals on the client change: mace smashes draw a shockwave, totems show a custom particle effect, and player hitboxes can be recolored.
What it does
The mod targets player-versus-player fights by changing how certain combat actions look on screen. A mace smash produces a shockwave, a totem of undying shows a custom effect, and Ender Pearl throws leave a trail. Death can also play its own effect. Each of these is a visual layer only, so combat rules stay as they are in vanilla.
Settings let each player tune the result. The shockwave's opacity and size, the totem effect's opacity, the hitbox opacity and colors, and the Ender Pearl trail opacity can all be adjusted. Mas Effects needs Cloth Config API for its settings screen and Mod Menu to open it from the mod list. The mod is built for Fabric only and covers 1.21 – 1.21.11 across six release versions, with 2.1.0 for 1.21.11 as the latest file.
Key features
Mace smash shockwave
A mace smash releases a visible shockwave around the impact point during player combat.
Custom totem effect
When a totem of undying is used, the mod shows its own particle effect in place of the default one.
Ender Pearl trail
Thrown Ender Pearls leave a trail that can be made more or less opaque in the settings.
Adjustable hitboxes
Player hitboxes can be shown with chosen opacity and colors, which makes fights easier to follow.
Player death effect
A separate effect plays when a player dies, shown alongside the other combat visuals.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 2
Use cases
Player versus player servers
Players who fight each other can follow mace hits and hitboxes more closely when the effects are on.
Recorded combat clips
Players who record footage of player fights can use the visual effects as part of the captured scene.
Who it’s for: Players who take part in player-versus-player fights on Fabric and want clearer combat visuals. Players on vanilla-only setups with no interest in combat effects have no reason to install it.
How it compares
Portal Hitbox Fix is a server-side only mod for Fabric with files for 1.21.5, released under CC0 1.0 Universal and open source. CoolClient is a client-side Fabric mod for 1.21.1 under All rights reserved, and it is not open source. PotatoClient is a client-side Fabric mod for 1.21.11 under the MIT License and open source, so its open source status differs from Mas Effects.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Mas Effects | Fabric | 1.21 – 1.21.11 | Client-side only | 2026-05-05 |
| Portal Hitbox Fix | Fabric | 1.21.5 | Server-side only | 2025-04-05 |
| CoolClient | Fabric | 1.21.1 | Client-side only | 2026-07-08 |
| PotatoClient | Fabric | 1.21.11 | Client-side only | 2026-01-13 |
Questions
Does Mas Effects need Cloth Config API?
Can Mas Effects run on a Forge or NeoForge setup?
Do the effects change combat rules?
In the catalog
Mas Effects is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from MasUN0
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What the author says
What the mod's configuration allows you to change: - Mace shockwave opacity and size - Totem effect opacity - Hitbox opacity and colors - Ender Pearl trail opacity
Official listing
- Modrinth page
- modrinth.com/mod/mas-effects
- Owner
- MasUN0
- Published
- 2025-05-13
- Updated on Modrinth
- 2026-05-05
- Facts verified
- 2026-10-15