Kev's Projectile Immunity Fix
by KevzCz
Kev's Projectile Immunity Fix changes how invulnerability frames apply when several projectiles strike a mob at once, so each hit can register.
What it does
In vanilla Minecraft, a mob struck by one projectile becomes briefly invulnerable, so further arrows, thrown weapons or magic bolts landing in the same moment do nothing. This Fabric and NeoForge mod reworks that behavior so multiple projectiles can deal damage without being blocked by the hurt cooldown. Projectiles that hit a non-player entity temporarily disable its invulnerability frames.
After a configurable number of projectile hits, the cooldown returns and vanilla invulnerability frames are restored for a short time. Server owners can tune these values, which shifts how quickly fights resolve and how harsh they feel, depending on the balance of their pack. The mod is lightweight and touches only projectile damage.
Kev's Projectile Immunity Fix is released under the MIT License and is open source, with its source code and issue tracker public. It needs Minecraft 1.21.1, Fabric Loader and Fabric API on Fabric, and is published for Fabric and NeoForge with files for 1.21.1, the latest dated 2026-10-11. Installation is needed on both the client and the server.
Key features
Multi-projectile hits
Several arrows, thrown weapons or magic bolts can damage a mob that is hit at the same moment.
Non-player entity handling
Projectiles that strike a non-player entity temporarily disable its invulnerability frames.
Configurable hit limit
After a set number of projectile hits, vanilla invulnerability frames return for a short period.
Balance tuning
Adjustable values let a pack shift how quickly fights resolve and how harsh they feel.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Server owners and modpack makers who want projectile damage to land more consistently, and players of survival or combat packs who want to tune the balance of ranged fights.
How it compares
Bring Back My Spawn Immunity is a client and server mod under the Apache License 2.0, open source, for Fabric and Quilt on 1.21.4 – 1.21.10, so it targets different versions and a different feature. Trajectory is a client-side only mod under the Creative Commons Attribution Non Commercial Share Alike 4.0 license, not open source, for Fabric on 1.21 – 1.21.1, and only shows projectile paths.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Kev's Projectile Immunity Fix | Fabric and NeoForge | 1.21.1 | Client and server | 2026-10-11 |
| Bring Back My Spawn Immunity | Fabric and Quilt | 1.21.4 – 1.21.10 | Client and server | 2025-10-05 |
| Trajectory | Fabric | 1.21 – 1.21.1 | Client-side only | 2024-09-03 |
Questions
Does Kev's Projectile Immunity Fix need Fabric API?
Does the mod have to be installed on both sides?
Can the hit limit and cooldown be changed?
In the catalog
Kev's Projectile Immunity Fix is one of 29,952 Game mechanics mods on ModsFinder, and one of 19,630 Game mechanics mods for Fabric. 32,366 mods support Minecraft 1.21.1.
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What the author says
Projectile Immunity Fix is a lightweight Fabric mod that balances projectile damage by reworking Minecraft’s invulnerability frames (i-frames) when hit by multiple projectiles, like arrows, thrown weapons, or magic bolts. In vanilla Minecraft, when a mob is hit by one projectile, it becomes briefly invulnerable…
Official listing
- Modrinth page
- modrinth.com/mod/kevs-projectile-immunity-fix
- Owner
- KevzCz
- Published
- 2025-04-28
- Updated on Modrinth
- 2026-10-11
- Facts verified
- 2026-10-15