Controlled

Controlled gives you simple, precise control over which entities are allowed to spawn in your world.

Disable one mob, reduce its spawn rate, limit how many can exist, block an entire category, or control every entity from a particular mod—all from a searchable in-game menu. Controlled supports vanilla and modded entities through the Forge entity registry, so you do not need to type registry IDs manually.

Safe by default

Controlled changes nothing when first installed. Its master control switch is disabled, all entity rules are set to Default, spawn chances remain at 100%, caps remain unlimited, and existing entities are preserved.

You decide when the mod starts controlling spawns.

Main features

Searchable list of every registered vanilla and modded entity

Filter entities by name, registry ID, category, mod name, or namespace

Select multiple entities and change their rules together

Three clear rule states: Default, Block, and Allow

Block entire categories or entire mods

Add exceptions that bypass a blocked category or mod

Separate rules for detectable baby mobs

Set an individual spawn chance from 0% to 100%

Set a loaded-dimension cap for each entity type

Choose which spawn sources the rules affect

View and edit every gamerule registered in the current world

Built-in support for modded entities and modded gamerules

Optional Configured integration for advanced configuration access

Multiplayer permission checks for gamerule editing

No mixins and no replacement entity classes

Easy entity control

Open Mods → Controlled → Config to access the main menu.

The entity list opens on Minecraft entities and can be changed to show other installed mods, categories, blocked entities, allowed entities, or all entities. Use the search box to find a mob by its displayed name, registry ID, mod name, namespace, or category.

Click the square at the front of a row to select it. You can select several entities and apply the same rule to all of them.

Each entity has three possible rules:

Default: Controlled does not give the entity a special block or allow rule.

Block: The selected entity is prevented from spawning through enabled spawn sources.

Allow: The selected entity is allowed even when its category or mod is blocked.

An explicit Allow rule takes priority over category and mod blocking, making whitelisting simple. For example, you can block the entire Hostile category but still allow creepers.

Categories and mod groups

Entities are automatically organized into:

Hostile

Friendly

Ambient

Water

Bosses

Miscellaneous / Other

You can block a complete category with one setting. You can also block every entity belonging to a particular mod namespace. Controlled uses the owning mod’s displayed name where available; unknown ownership is placed under Other with its namespace shown.

Modded bosses that are not detected automatically can be added to the custom boss list through the advanced configuration.

Baby mob controls

Baby variants can be controlled separately from their adult form when the entity exposes a detectable baby state.

You can:

Block the baby form of a specific entity

Explicitly allow a specific baby form

Block all detectable baby mobs

Keep the adult version unchanged

This makes setups such as “allow zombies but disable baby zombies” possible.

Spawn chance and mob caps

Every entity can be tuned individually:

Spawn chance: Choose a value from 0% to 100%. A lower value reduces successful spawn attempts without completely removing the entity unless it is set to 0%.

Loaded-dimension cap: Limit how many loaded entities of that exact type may exist in the current dimension. Unlimited is the default.

These controls apply only to the spawn sources you enable and do not remove existing entities unless loaded-entity removal is separately enabled.

Spawn source controls

Choose exactly which creation methods Controlled may block:

Natural spawning and world generation

Mob spawners

Breeding and jockey creation

Events, raids, triggered spawns, and mob-summoned entities

Conversions and reinforcements

Buckets and dispensers

Spawn eggs

Commands such as

/summonUnknown or direct modded spawn methods

Spawn eggs and commands are not blocked by default, allowing blocked entities to remain easy to test.

Existing entity safety

Controlled normally affects new spawns only. Existing entities are left alone.

An optional setting can stop blocked entities when their chunks are loaded. Because this is more destructive, it is disabled by default. Separate safety options protect:

Named entities

Tamed entities owned by players

World gamerule editor

Controlled includes a separate screen for the live gamerules of the currently loaded world.

Search all boolean and integer gamerules

View their current server values

Toggle boolean rules

Edit integer rules

See gamerules added by other mods

Quickly check and change doMobSpawning

The screen edits the active world, not a world that has not been created yet. In multiplayer, changing gamerules requires operator permission level 2 or higher.

Mod compatibility

Controlled reads entities from the Forge registry instead of using a hardcoded vanilla-only list. This allows entities from most Forge mods to appear automatically.

Spawn control uses public Forge events and avoids mixins, entity-class replacement, and creating modded entities just to display them. Unknown or unusual direct spawn methods can be covered by the optional compatibility fallback.

Some mods may create entities through custom systems that bypass normal Forge spawn events. Enable Unknown and direct mod spawns when those entities need stricter control.

Multiplayer

For multiplayer spawn control, install Controlled on the server and use the same configuration there. Installing it on clients provides the in-game menus. Gamerule changes are sent to the server and checked against operator permissions.

Server owners can distribute or edit:

config/controlledspawns-common.toml

Requirements

Minecraft 1.20.1

Forge 47.x

Java 17

Configured is optional. If installed, it provides access to Controlled’s advanced Forge configuration from its Configured screen.

Important notes

Controlled manages spawning and loaded-entity limits. It does not modify mob AI, attributes, drops, models, or textures.

Caps count loaded entities of the exact type in the current dimension.

Baby controls depend on the entity exposing a detectable baby state.

The master switch must be enabled before entity spawn rules take effect.

License

Controlled is All Rights Reserved. Refer to the license included with the mod for permissions covering personal use, modpacks, videos, redistribution, modification, and source use.

Author: GoatmanXD