Minecraft version
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Modrinth · Minecraft mod
ActiveTime
Your world only progresses while you play. Automatically freezes the Minecraft simulation when no players are online.
Choose a version Pick your version below, then grab the matching file.
Quick answer
Which ActiveTime release matches 1.21.6?
Best match for your filters 1.0.0
Game version 1.20.3, 1.20.4, 1.20.5
Loader paper
ActiveTime 1.0.0 targets 1.20.3, 1.20.4, 1.20.5 with paper. Do not install it on the client. It must be installed on the dedicated server. No extra mods listed for this file.
Where it goes
Is ActiveTime required on the client, server, or both?
Do not install it on the client. It must be installed on the dedicated server.
Client Not supported
Dedicated server Required
Loader for this release paper
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume
This file is marked server-only.
What else does ActiveTime 1.0.0 need?
1.0.0 on 1.21.6. Every mod below is checked against that same setup.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add ActiveTime without breaking your instance.
Built for ActiveTime 1.0.0 on 1.21.6. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.0.0. It targets 1.20.3, 1.20.4, 1.20.5 with paper; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
Do not install it on the client. It must be installed on the dedicated server.
- 04
Pick the file you checked
Use the “Get this file” button beside 1.0.0. It opens that exact file at the source.
About this project
What does ActiveTime add?
ActiveTime
Your world only progresses while you play.
ActiveTime is a lightweight server-side mod/plugin built for private SMPs, co-op groups, and modded survival playthroughs.
Leaving a 24/7 server running shouldn't punish you. When nobody is online, world progression shouldn't advance needlessly—seasons shouldn't rotate, days shouldn't tick away, and time-based difficulty shouldn't scale up while everyone is asleep.
Using Minecraft's native tick simulation freeze (1.20.3+), ActiveTime automatically pauses the world the moment the server is empty, and resumes instantly before the next player loads in.
Available for: Paper / Purpur, Fabric, and Forge (1.20.3+)
Why use this?
| Scenario | Vanilla / Default Server | With ActiveTime |
|---|---|---|
| Everyone is offline | Days cycle needlessly, seasons pass, crop timers run out | World simulation freezes completely in place |
| Modded progression | Difficulty scales up, food spoils while you sleep | All mod timers (seasons, day counters) pause safely |
| A friend joins at 3 AM | They wake up to a different in-game week | Resumes instantly right where the group left off |
Project description from Modrinth.
Pick your setup
ActiveTime by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
Minecraft version
26.1.2
3 loader buildsMinecraft version
26.1.1
3 loader buildsMinecraft version
26.1
3 loader buildsMinecraft version
1.21.11
3 loader buildsMinecraft version
1.21.10
3 loader buildsMinecraft version
1.21.9
3 loader buildsMinecraft version
1.21.8
3 loader buildsMinecraft version
1.21.7
3 loader buildsMinecraft version
1.21.6
3 loader buildsMinecraft version
1.21.5
3 loader buildsMinecraft version
1.21.4
3 loader buildsShowing the newest 12 of 20 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
ActiveTime versions and loaders
1.0.0
activetime-paper-1.0.0.jar
3 Sept 2026
Client Not supported Server Required Dependencies No extras listed Listed on Release listing
Check the 1.21.6 · paper setup 1.20.31.20.41.20.51.20.6 release
1.0.0
activetime-forge-1.0.0.jar
3 Sept 2026
Client Not supported Server Required Dependencies No extras listed Listed on Release listing
Check the 1.21.6 · Forge setup 1.20.31.20.41.20.51.20.6 release
1.0.0
activetime-fabric-1.0.0.jar
3 Sept 2026
Client Not supported Server Required Dependencies No extras listed Listed on Release listing
Check the 1.21.6 · Fabric setup 1.20.31.20.41.20.51.20.6 release
Looking for an older file? The official Modrinth project page is in Resources.
