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Gregicality RocketryMinecraft mod for 1.21.1

A Modern Space Addon for Gregtech

client and servernewest supported 1.21.1TechnologyAdventureEquipmentGame Mechanics
Latest version
mc1.20.1-0.2.9
Minecraft
1.19.2 to 1.21.1
Java
Java 21+
Loaders
Fabric, NeoForge, Forge
Licence
LGPL-3.0-or-later
Downloads
36.9k
Updated
3 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Gregicality Rocketry servers

One click and Gregicality Rocketry is installed with the right loader, on hardware built for it.

  • 1.21.1
  • Fabric
  • NeoForge
  • Forge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version Gregicality Rocketry declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1Fabric, NeoForge, Forge21+declared8 Aug 2024
1.21Fabric, Forge, NeoForge21+declared13 Jun 2024
1.20.1Fabric, Forge, NeoForge17+declared12 Jun 2023
1.19.2Fabric, NeoForge, Forge17+declared5 Aug 2022

Download

From Gregicality Rocketry’s own host. Nothing is re-hosted here.

All 56 releases
mc1.20.1-0.2.9beta1 Jul 2026

gcyr-1.20.1-0.2.9.jar · 1.6 MB · for 1.20.1

Download latest
40fcb00f273c…
Older versions24
  • mc1.20.1-0.2.89 Feb 20261.20.11.2 MB1.2k downloadsb95f7c764092…Get
  • mc1.20.1-0.2.715 Sept 20251.20.11.2 MB1.5k downloadsa2ea364b9995…Get
  • mc1.20.1-0.2.623 Dec 20241.20.11.2 MB4.0k downloads71c84706111e…Get
  • mc1.20.1-0.2.513 Nov 20241.20.11.2 MB3.5k downloadsfa1a7b9072c7…Get
  • mc1.21.1-0.2.428 Sept 20241.21.1, 1.211.5 MB3.0k downloads83fbe6056b7d…Get
  • mc1.20.1-0.2.428 Sept 20241.20.11.2 MB1.1k downloadse0316cdbe8de…Get
  • mc1.21.1-0.2.326 Sept 20241.21.1, 1.211.5 MB169 downloads270532620dbc…Get
  • mc1.20.1-0.2.324 Sept 20241.20.11.2 MB274 downloads227399c3fb85…Get
  • mc1.21.1-0.2.214 Sept 20241.21.1, 1.211.5 MB144 downloads5637ac1e0f7e…Get
  • mc1.20.1-0.2.214 Sept 20241.20.11.2 MB363 downloads23875efc195f…Get
  • mc1.21.1-0.2.1+19 Sept 20241.21.1, 1.211.5 MB95 downloads930617370145…Get
  • mc1.21.1-0.2.19 Sept 20241.21.1, 1.211.5 MB146 downloadsa2deaa9dbda7…Get
  • mc1.20.1-0.2.19 Sept 20241.20.11.2 MB263 downloadsd5093e3f789e…Get
  • mc1.20.1-0.2.026 Aug 20241.20.11.2 MB423 downloadsdc640a4a5f93…Get
  • mc1.20.1-0.1.914 Jun 20241.20.11.1 MB4.7k downloadsac5024296212…Get
  • mc1.20.1-0.1.823 May 20241.20.11.1 MB1.3k downloadsbb5d723047eb…Get
  • mc1.20.1-0.1.7.b21 May 20241.20.11.1 MB186 downloadsb21af2d3cf1a…Get
  • mc1.20.1-0.1.7-a4 May 20241.20.11.1 MB322 downloads85681c5f2315…Get
  • mc1.20.1-0.1.73 May 20241.20.11.1 MB186 downloads8daa9e24603c…Get
  • mc1.20.1-0.1.614 Apr 20241.20.11.1 MB406 downloadsd054e5902f5f…Get
  • mc1.20.1-0.1.510 Apr 20241.20.11.1 MB261 downloads85e62c435c4c…Get
  • mc1.20.1-0.1.45 Apr 20241.20.11.1 MB240 downloads2ff28b12c51c…Get
  • mc1.20.1-0.1.33 Feb 20241.20.11.1 MB743 downloads7e9f0d072049…Get
  • mc1.20.1-0.1.3-aa-forge8 Jan 20241.20.11.6 MB376 downloadsed12036de9ad…Get

Frequently asked

Does Gregicality Rocketry work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Gregicality Rocketry declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does Gregicality Rocketry support?

Everything the author has declared, from 1.19.2 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Gregicality Rocketry on the client or the server?

Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.

Which platform or loader does Gregicality Rocketry support?

Fabric, NeoForge, Forge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Gregicality Rocketry?

On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.

What licence is Gregicality Rocketry under?

LGPL-3.0-or-later, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install Gregicality Rocketry?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download Gregicality Rocketry safely?

Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

GeckoLibA 3D animation library for entities, blocks, items, armor, and more!BookshelfAn open source library for other mods!Cloth Config API (Fabric/Forge/NeoForge)Config Screen API for MinecraftJourneyMapReal-time map used for mapping in-game or your browser as you explore.Architectury APIAn intermediary api aimed to ease developing multiplatform mods.Jade 🔍Shows information about what you are looking at. (Hwyla/WAILA fork for Minecraft 1.16+)

Last checked 2 mo ago against Modrinth. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .