Mob Variants
by Xires87
Players who want tougher hostile mobs can add Mob Variants, which converts some vanilla zombies, skeletons, spiders and creepers into stronger variants during spawning.
What it does
Mob Variants leaves the vanilla spawn system in place and changes which mob appears, rather than adding new spawns on top. Conversion rules are data driven since version 6.6.0, so a pack maker can define which mob replaces which. Already spawned vanilla mobs stay as they are. The chance of a conversion grows with depth, and by default variants appear below Y level 26.
Each variant changes its base mob. Armored Spiders have more health and armor, a knockback resistance and arrow deflection without piercing. Undead skeletons may carry a stone sword and shoot arrows that apply weakness, blindness or instant damage. Forgotten zombies carry extra armor and can apply mining fatigue. Cave Creepers explode quickly and set fire. Biome variants include Tropical Spiders in jungles, Explorers that climb walls, and zombies in snowy biomes that apply slowness.
The mod requires Fabric, Cloth Config API and Sinytra Connector. Every player and the server need a copy of the mod. Files are published for Fabric only, for 9 release versions, 1.20 – 1.21.1, and the latest file is 6.6.0+1.21 for 1.21.1, released 2026-08-20. The code is open source under the MIT License.
Key features
Converted spawns
Vanilla zombies, skeletons, spiders and creepers have a chance to spawn as a stronger variant instead.
Depth-based chance
Conversion odds rise deeper underground, and the default setting limits variants to below Y level 26.
Biome variants
Mobs spawning in specific biomes, such as jungles, swamps and snowy areas, can convert to biome variants.
Data driven rules
Since version 6.6.0, conversion rules are defined in data, so existing mob replacements can be changed or extended.
Gallery
Compatibility
Latest build for each game version and loader.
1.21.x2 of 2 versions with builds
1.20.x7 of 7 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
How it compares
Zombie Villager Variants and Jungle Zombies are both Fabric mods for 1.21 – 1.21.10, run on client and server, and are not open source under All rights reserved. Stronger Mobs is a server-side only Fabric mod for 1.20 – 1.21.10 released under the MIT License, so clients need nothing installed. Hostile Climbers is also server-side only and open source under the MIT License, but it is for 1.20.1 – 1.21.1.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Mob Variants | Fabric | 1.20 – 1.21.1 | Client and server | 2026-08-20 |
| Zombie Villager Variants | Fabric | 1.21 – 1.21.10 | Client and server | 2025-12-30 |
| Jungle Zombies | Fabric | 1.21 – 1.21.10 | Client and server | 2025-12-02 |
| Stronger Mobs | Fabric | 1.20 – 1.21.10 | Server-side only | 2025-11-22 |
| Hostile Climbers | Fabric | 1.20.1 – 1.21.1 | Server-side only | 2026-02-18 |
Questions
Does Mob Variants need Sinytra Connector?
Must Mob Variants be installed on the server?
Are vanilla mobs already in the world changed?
In the catalog
Mob Variants 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 Xires87
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What the author says
To keep vanilla spawn system possibly untouched, instead of simply spawning mobs, this mod attempts to replace already spawned vanilla mobs. Since 6.6.0 the system is data driven, so you can create your own mob conversion rules or replace existing ones. When mob spawns, there is a chance that it will be converted…
Official listing
- Modrinth page
- modrinth.com/mod/fryc-mob-variants
- Owner
- Xires87
- Published
- 2024-10-04
- Updated on Modrinth
- 2026-08-20
- Facts verified
- 2026-10-15