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Adaptive Tick

by Pepsied

Adaptive Tick changes the game's tick rate according to the player's health, so a low health total slows the world down and a fuller one speeds it back up.

FabricForgeNeoForgeQuiltServer required, client optionalMIT License1.21 – 1.21.11

What it does

Adaptive Tick links the tick rate to health. When a player's health drops, the world can run at a slower tick rate, and as health recovers the tick rate rises again. The author describes the effect as simulating adrenaline, and gives the example of a player at 5 hearts in a heavily modded survival pack, where the game can run at about 50% speed until health is regained.

With several players online, the mod tracks the player with the least health and syncs the tick rate to that value, so the whole server follows the most endangered player. The rate setting is adjustable in the configuration. The mod is published for Fabric, Forge, NeoForge and Quilt, and the server needs it installed. The tick command it relies on needs permission level 3, so server.properties must raise the function permission level from 2 to 3. Single-player worlds on Minecraft 1.21.11 cannot change that level directly, and TickLowerPerm, a separate mod, is named by the author as the workaround.

Key features

  1. Health-based tick rate

    The tick rate follows the player's health, slowing the world as health falls and restoring speed as it recovers.

  2. Lowest-health sync

    With multiple players active, the rate follows the player with the least health, so one endangered player sets the pace.

  3. Adjustable rate setting

    The rate effect can be tuned through a setting that controls how strongly health changes the tick rate.

  4. Permission workaround

    A required tick command permission can be raised with a separate mod, since single-player options cannot adjust it on 1.21.11.

Compatibility

Latest build for each game version and loader.

1.21.x12 of 12 versions with builds
1.21.111.0.0+mod1.0.0+mod1.0.0+mod1.0.0+mod
1.21.101.0.0+mod1.0.0+mod1.0.0+mod1.0.0+mod
1.21.91.0.0+mod1.0.0+mod1.0.0+mod1.0.0+mod
1.21.81.0.0+mod1.0.0+mod1.0.0+mod1.0.0+mod
1.21.71.0.0+mod1.0.0+mod1.0.0+mod1.0.0+mod
1.21.61.0.0+mod1.0.0+mod1.0.0+mod1.0.0+mod
1.21.51.0.0+mod1.0.0+mod1.0.0+mod1.0.0+mod
1.21.41.0.0+mod1.0.0+mod1.0.0+mod1.0.0+mod
1.21.31.0.0+mod1.0.0+mod1.0.0+mod1.0.0+mod
1.21.21.0.0+mod1.0.0+mod1.0.0+mod1.0.0+mod
1.21.11.0.0+mod1.0.0+mod1.0.0+mod1.0.0+mod
1.211.0.0+mod1.0.0+mod1.0.0+mod1.0.0+mod
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

How it compares

Full comparison

Slumber is server-side only, open source under the MIT License and published for 1.21.1 – 1.21.10 on Fabric, Forge and NeoForge, so it covers a different version range. Adrenaline is a client and server mod for Fabric on 1.21.11 under the MIT License and is not open source, so both sides must run it. Adaptive Tick is server required with an optional client, and its files for Fabric, Forge, NeoForge and Quilt target 1.21.11.

ModLoadersGame versionsEnvironmentUpdated
Adaptive TickFabric, Forge, NeoForge and Quilt1.21 – 1.21.11Server required, client optional2025-01-20
SlumberFabric, Forge and NeoForge1.21.1 – 1.21.10Server-side only2025-10-28
AdrenalineFabric1.21.11Client and server2026-03-18

Questions

Does Adaptive Tick need to be installed on the server?

Yes. The server must run the mod, while players may add it to their clients but do not need to, since either side can add it and only the server is required to have it.

Why does the server need a permission change for the tick command?

The tick command needs permission level 3. Server owners must change the function permission level from 2 to 3 in server.properties.

Can single-player worlds use Adaptive Tick on 1.21.11?

Single-player options cannot adjust the permission level on 1.21.11, so a separate mod such as TickLowerPerm is needed to bypass it.

In the catalog

Adaptive Tick is one of 29,952 Game mechanics mods on ModsFinder, and one of 19,630 Game mechanics mods for Fabric. 19,862 mods support Minecraft 1.21.11.

Game mechanics mods29,952Fabric modsMods for 1.21.1119,862

More from Pepsied

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Potted Farms1.21 – 26.2Mining Quarries1.21 – 26.2Auto Harvest1.20.3 – 26.2Early Elytra1.21 – 26.2More Professions1.21 – 26.2Item Glow1.21 – 26.2

Similar mods

Better Third Person1.16.4 – 1.21.8Sounds1.20 – 26.3Cut Through1.18.2 – 26.3Bad Wither No Cookie - Reloaded1.12.2 – 1.21.10Carpet1.14.4 – 26.3Client Tweaks1.12.2 – 26.3

What the author says

Got a mod pack that makes survival extremely tough? Say Chaos Core for example? Well with Adaptive Tick, your game will slow down as you lose health and pick up speed as you regain health. Say you're at 5 hearts; the game will be running 50% slower. This works by setting the rate of the tick to your health. If…
Pepsied, on the Modrinth page

Official listing

Owner
Pepsied
Published
2025-01-20
Updated on Modrinth
2025-01-20
Facts verified
2026-10-15

Tags

Game mechanicsUtility
Open on ModrinthCompare