Proper Mobcap Modifier
by vlad2305m
Proper Mobcap Modifier changes how many hostile and passive mobs can exist in a loaded area, along with the timing of their despawns, by overriding the SpawnGroup values in the game's configuration.
What it does
Minecraft caps the number of mobs that can spawn in each category around players, and this mod lets server owners set those caps and the despawn timing through a config file instead of the default values. Its settings cover the despawn start range, which defaults to a 300-second window, the immediate despawn range, and a 20-second spawn cycle. Because the change is made at the level of the SpawnGroup getters, the caps themselves are reconfigured rather than patched with workarounds.
The mod only needs to run on the server, so players join without installing anything. It requires Cloth Config API and Fabric API to read its settings screen and hook into the game. Released under the MIT License, it has files for Fabric on Minecraft 1.20 – 1.20.4, with 3.2.2 for 1.20.4 as the latest file, first released and last updated on 2024-02-18.
The mod is aimed at server owners who want predictable mob counts and despawn behavior on their world, and it works with simple setups that do not need additional mobcap logic. The project keeps its source code and issue tracker public, so changes can be followed and reported in the open.
Key features
Configurable spawn groups
Each spawn group's cap can be set in the config, instead of the fixed values built into the game.
Despawn start range
The distance at which mobs begin to despawn is configurable, with a default window of 300 seconds, or 5 minutes.
Immediate despawn range
A separate range sets where mobs despawn at once, so nearby mobs can be cleared without waiting for the timer.
20-second spawn cycle
The spawn cycle runs every 20 seconds, giving a steady rate of mob checks around players.
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
How it compares
Spawnix is a Fabric server-side only mod for 1.20, released under All rights reserved and not open source. MobCap HUD is a Fabric client-side only mod under the MIT License, covering 1.21.5 – 1.21.11, so it displays counts rather than changing them. Piglin-Free Portals is a server-side only Fabric mod for 1.19 – 26.1.2, released under the GNU General Public License v3.0 only.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Proper Mobcap Modifier | Fabric | 1.20 – 1.20.4 | Server-side only | 2024-02-18 |
| Spawnix | Fabric | 1.20 | Server-side only | 2026-01-22 |
| MobCap HUD | Fabric | 1.21.5 – 1.21.11 | Client-side only | 2026-05-29 |
| Piglin-Free Portals | Fabric | 1.19 – 26.1.2 | Server-side only | 2026-05-07 |
Questions
Does Proper Mobcap Modifier need to be installed on the client?
Which Minecraft versions does Proper Mobcap Modifier support?
Can the spawn caps be changed without editing code?
In the catalog
Proper Mobcap Modifier is one of 11,058 Mobs mods on ModsFinder, and one of 5,189 Mobs mods for Fabric. 13,907 mods support Minecraft 1.20.4.
More from vlad2305m
Similar mods
What the author says
This mod just modifies SpawnGroup enum getters to get the values from config instead. 100% Without magic. Works on both client and server, not required on client.
Official listing
- Modrinth page
- modrinth.com/mod/proper-mobcap-modifier
- Owner
- vlad2305m
- Published
- 2024-02-18
- Updated on Modrinth
- 2024-02-18
- Facts verified
- 2026-10-15