Gregnautics Continued is a hand-made port of the legendary TerraFirmaGreg — Modern pack (Minecraft 1.20.1) to Minecraft 1.21.1 / NeoForge, married with Create: Aeronautics — buildable, fully simulated airships you pilot across the world.

This is not a "re-release with newer mod versions." It is a port of 65,000+ lines of scripts, ~1,200 quests, worldgen, assets and mechanics, all adapted by hand to the new KubeJS 7 / GregTech CEu 8 / TerraFirmaCraft 4 APIs. Everything that could not be carried over directly received a carefully chosen replacement.

🌍 The journey

🪨 Stone Age — realistic TerraFirmaCraft survival: seasons, thirst, body temperature, hand forging.
⚙️ Metallurgy — anvils, alloys, blast furnaces; the road from copper to steel through real metallurgy.
🏭 Industry — GregTech CEu Modern: voltage ages ULV → UHV, automation, chemistry, cleanrooms.
🚢 Aeronautics — Create: Aeronautics: build your own flying ship out of rotating machinery.
🚀 Space — Stellaris: rockets, the Moon, Mars, Venus and beyond, for late-game resources.

📊 What's inside

238 mods, hand-picked and balanced around TerraFirmaGreg progression.
~23,300 recipes generated by the pack's KubeJS scripts.
1,194 quests across 25 chapters, localized in English and Russian.
Full worldgen: 89 ore veins, geodes and features.
Quality of life that a pack this size needs: inventory sorting, a GTA-style third person camera, backpacks, minimap, Jade tooltips, JEI.
ComputerCraft: Tweaked, Advanced Peripherals and Create ↔ CC bridges included.

🔧 Fixed upstream, too

While porting, several genuine bugs were found in the mods themselves and fixed — the fixes were submitted upstream as pull requests (GregTech CEu Modern ×3, KubeJS-TFC ×1). Until they are merged, the pack ships its own patched builds.

⚙️ Requirements

Minecraft 1.21.1, NeoForge 21.1.235+
8 GB+ of allocated memory (16 GB recommended)
Java 21

🖥️ Playing on a server?

Ready-made server files ship with every release: github.com/ascorblack/Gregnautics-Continued/releases — client-only mods stripped out, with an installer that pulls NeoForge for you.

Keep the server on the same pack version as your client: a lot of this pack lives in server-side scripts, so a mismatched server can leave recipes and food behaving oddly.

📜 Credits & attribution

Gregnautics Continued stands on the shoulders of two great projects:

TerraFirmaGreg — Modern by the TerraFirmaGreg Team (github.com/TerraFirmaGreg-Team) — the original pack, whose progression, balance and content form the foundation of this port.
Create: Aeronautics and its mod suite — the reason this pack exists.
The TerraFirmaCraft, GregTech CEu Modern, Create and Stellaris teams — the mods everything is built around.
The authors of all 238 mods in the pack.

The pack ships a patched build of GregTech CEu Modern (LGPL-3.0). In accordance with LGPL-3.0, the modified source is published here: github.com/ascorblack/GregTech-Modern.

🔗 The full port — scripts, quests, assets, porting notes and license documentation — is open-source: github.com/ascorblack/Gregnautics-Continued