Logical IFrames
by kohara
Logical IFrames changes how damage invulnerability works on the server, so mobs can be hit by several attackers at once and players lose the cooldown between hits.
What it does
The datapack replaces the standard damage invulnerability window, the short red flash that blocks repeated hits, with a system that follows the damage type. Several sources can land in the same moment, and a player attacked by three zombies at once takes all three hits. Poison and wither stack with other sources of damage, and multiple explosions add their damage together instead of only increasing knockback.
Its purpose is to make certain fights more threatening with simple changes rather than new mobs. Witches no longer resist damage from the Warden's sonic boom, a change the author describes as fixing a gap that did not make sense. Miscellaneous adjustments to other damage behavior are included in the same pack. Server owners who want harder combat without adding content can use it as a standalone change.
Logical IFrames is published for Fabric, Forge, NeoForge and Quilt, with files for 1.20 – 1.21.1 across five release versions. Only the server needs to run it, while players can join without installing anything. The code is released under All rights reserved and is not open source.
Key features
Simultaneous attackers
Mobs can attack a player individually at the same moment, so several hits can land together.
No cooldown after player attacks
Player attacks no longer grant mobs an immunity window, so follow-up hits are not blocked.
Stacking poison and wither
Poison and wither damage stack with other sources instead of being capped by them.
Stacking explosion damage
Multiple explosions add damage together rather than only increasing knockback.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Harder survival fights
Players who want mob encounters to feel more dangerous can add the datapack to a survival world.
Server balance changes
Server owners can change how damage works for everyone without installing anything on the client side.
Who it’s for: Server owners and survival players who want damage to stack and mobs to hit harder, without new mobs or items.
How it compares
No Immunity Frames removes invulnerability frames too, but it is released under the MIT License and needs versions 1.21.4 – 1.21.11. NoIFrames is an MIT License option for 1.21.1 only, on Fabric and Forge. ReHurtTime uses a custom license and targets Forge and NeoForge for 1.20.1 – 1.21.11.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Logical IFrames | Fabric, Forge, NeoForge and Quilt | 1.20 – 1.21.1 | Server required, client optional | 2024-08-22 |
| No Immunity Frames | Fabric, Forge, NeoForge and Quilt | 1.21.4 – 1.21.11 | Server required, client optional | 2025-05-10 |
| NoIFrames | Fabric and Forge | 1.21.1 | Server required, client optional | 2025-04-24 |
| ReHurtTime | Forge and NeoForge | 1.20.1 – 1.21.11 | Server required, client optional | 2026-08-21 |
Questions
Which loaders does Logical IFrames support?
Does the server need Logical IFrames?
Can the datapack be used in a world that already has a server?
In the catalog
Logical IFrames is one of 11,058 Mobs mods on ModsFinder, and one of 5,189 Mobs mods for Fabric. 32,366 mods support Minecraft 1.21.1.
More from kohara
Similar mods
What the author says
Logical IFrames is a datapack which aims to rework Minecraft's damage invulnerability system by removing damage cooldown from certain damage types, which in result makes the game more challening with very simple changes.
Official listing
- Modrinth page
- modrinth.com/mod/logical-iframes
- Owner
- kohara
- Published
- 2023-10-07
- Updated on Modrinth
- 2024-08-22
- Facts verified
- 2026-10-15