Simulatica
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
⬇ Download on ModrinthSimulatica
What Is This
Simulatica is Simulation + Litematica. It is designed to run block and entity logic within Litematica projections.
How To Use
/simulatica start <litematica file name>— Start simulating a projection/simulatica stop <litematica file name>— Stop simulating a projection/simulatica execute <Command to execute in simulated space>— Execute a command within the simulated space
Once a simulation has started, switch to mode 10/10 to interact with the projection.
How Does It Work
Once at least one simulation has started, a local integrated server is created on the client thread. It initializes a completely empty dimension and loads the target projection to be simulated into it.
Note that this means:
- Projections being simulated cannot overlap.
- Adjacent or near by projections can affect each other during simulation.
- Client-side lag may increase.
- If the simulated integrated server becomes laggy, the client will also be affected.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.11
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as simulatica-2.0.0.jar — drop this file into the mods folder
- Download size: 103 KB
- Download link checked 13 Oct 2026 — working
These come from our own check of the pack file, not from the source page.