Natural Size Variation
Natural Size Variation gives each mob that spawns a random scale, so a single species can appear in slightly different sizes in the same world.
What it does
Vanilla mobs of one type all share the same size, and this mod changes that. Each spawned entity receives a random scale modifier, drawn from a normal distribution, so most mobs land close to normal size while extreme sizes appear only rarely. The result is a mob encounter that is less uniform. The mod runs on the server, so players who join a server running it need nothing installed. Builds are published for Fabric and NeoForge, with 1.0 for 1.21.1 on Fabric and 1.0 for 1.21.2 on NeoForge, and the code is licensed under All rights reserved, so it is not open source.
Key features
Random mob scale
Each spawned entity is assigned a random scale modifier at the moment it appears in the world.
Normal distribution sizes
Scale values follow a normal distribution, keeping most mobs near normal size and extremes uncommon.
Unique encounters
Mobs of the same type can differ visibly in size, making each encounter less predictable.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Cobblemon Size Variations is an open source Fabric and NeoForge mod under the MIT License, built for 1.21.1, and it needs the server while the client may stay without it. Random Mob Sizes is a client and server mod for 1.18.2 – 1.21.10 under a Creative Commons non-commercial license, so every player installs it.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Natural Size Variation | Fabric and NeoForge | 1.20.5 – 1.21.2 | Server-side only | 2024-10-22 |
| Cobblemon Size Variations | Fabric and NeoForge | 1.21.1 | Server required, client optional | 2025-11-24 |
| Random Mob Sizes | Fabric, Forge and NeoForge | 1.18.2 – 1.21.10 | Client and server | 2025-12-04 |
Questions
Does a player need Natural Size Variation installed?
In the catalog
Natural Size Variation is one of 11,058 Mobs mods on ModsFinder, and one of 5,189 Mobs mods for Fabric. 12,072 mods support Minecraft 1.21.2.
More from Mandala Creations
Similar mods
What the author says
Isn't it strange that every entity of a type has the exact same size? Let's change that. With Natural Size Variation every spawned entity gets a random scale modifier assigned, meaning that every mob you encounter is unique. The scale modifier is based on a normal distribution, ensuring that most entities are near…
Official listing
- Modrinth page
- modrinth.com/mod/natural-size-variation
- Owner
- Mandala Creations
- Published
- 2024-05-03
- Updated on Modrinth
- 2024-10-22
- Facts verified
- 2026-10-15