Klsts' Monsters
by klsts
Klsts' Monsters adds a set of NeoForge monsters, drops, potions and a Halloween-themed mechanic to the 1.21.1 game, with its own world generation for wild turnips.
What it does
Players meet new mobs that challenge them in combat. Some monsters drop pieces that the player combines into Monster Hearts, and the mod adds new resources such as Halloween potions, weapons and armor. A new potion effect can kill a player who tries to sleep while it is active, and a Rotten Arm mob spawns and attacks entities with that effect. Halloween can be inflicted when an undead mob is hit, and it can wake the player up at night, sometimes with an attack from an undead mob. Milk cures Halloween, as does food made from a new crop.
Advanced Monsters is a separate system: monsters become stronger than usual around level 20 and above, and they can make defeating them harder through extra quirks. A killed player may drop Mystic Runes, and Advanced Monsters can drop Lootboxes whose contents depend on the advancements the player has earned, from iron up to diamond, Ancient Debris and Netherite armor. Wild Turnips generate randomly in the overworld, and Farmer villagers trade turnip-related items. The mod is published for NeoForge on client and server, under the MIT License, for 1.21.1 only.
Key features
Monster Heart Pieces
Some monsters drop Monster Heart Pieces, which are crafted into Monster Hearts that boost or activate certain items.
Halloween potions and effects
Halloween potions, weapons and armor join the game, and the Halloween effect can be inflicted by undead mobs.
Advanced Monsters
Monsters spawn in stronger forms at higher player levels, and defeated players may drop Mystic Runes.
Lootboxes
Advanced Monsters drop Lootboxes whose loot depends on the advancements the player has earned.
Wild Turnips
Turnips generate in the overworld and can be traded by Farmer villagers.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
How it compares
Monster Mod is a NeoForge monster mod for 1.21.1 that runs on client and server and is released under the MIT License, but it is not open source. Rav's Halloween is a NeoForge mod for 1.21.1 covering the Halloween theme; only the client needs it, so servers run without it, and it is All rights reserved. Sanguis is a NeoForge mod for 1.21.1 that runs on client and server, is open source and is released under the MIT License.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Klsts' Monsters | NeoForge | 1.21.1 | Client and server | 2025-03-20 |
| Monster Mod | NeoForge | 1.21.1 | Client and server | 2025-03-21 |
| Rav's Halloween | NeoForge | 1.21.1 | Client or server, optional | 2024-10-15 |
| Sanguis | NeoForge | 1.21.1 | Client and server | 2025-12-04 |
Questions
Does Klsts' Monsters need to be installed on the server?
Which game version does Klsts' Monsters support?
How is Advanced Monsters turned off?
In the catalog
Klsts' Monsters is one of 8,515 World generation mods on ModsFinder, and one of 4,175 World generation mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
More from klsts
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What the author says
This mods adds new mobs and mechanics to challenge the player! First, monster mobs will have a chance of dropping Monster Heart Pieces, which can be crafted into Monster Hearts, used as a new resource for things of the mod, as Halloween Potions, Weapons, Armor...
Official listing
- Modrinth page
- modrinth.com/mod/klsts-monsters
- Owner
- klsts
- Published
- 2025-03-20
- Updated on Modrinth
- 2025-03-20
- Facts verified
- 2026-10-15