GTO 0.5.6 Installation and Update Guide

Chat groups and community

The following QQ groupsare all optional, choose as needed, just join one of them,to get the latest updates at any time

• GTO QQ α group:927923997

• GTO QQ β group:532385262

• GTO QQ γ group:1091812286

• GTO QQ δ-Delta group:1098734084

• GTO Discord:https://discord.com/invite/PxruFSbtCn

• GTO Github:https://github.com/GregTech-Odyssey/GregTech-Odyssey

• GTO Paratranz(en):https://paratranz.cn/projects/16320

• GTO Paratranz(ru):https://paratranz.cn/projects/16525

• GTO Afdian:SURIED is creating GTO | Afdian

• GTO Ko-Fi:https://ko-fi.com/suried

GregTech-OdysseyIt is a Gray integration package, centered around Gray Technology and deeply performance-optimized, featuring350+ multi-block structure...interesting operational mechanisms, and functional chambers that increase production capacity, integrating magic modules to enrich the overall gameplay experience. As the core Mod'sGTOCoreNot only did it deeply customize the game flow, but it also broughtMachine Combination Mode(Implementing automatic switching of machine mode operation) and multithreading optimization, and addedModular Structure Gameplayand towardsEMI and AEFunctional enhancement of [X]. After deep modification, the integration package achieved...Faster startup, significantly improved FPS, and still maintain good fluidity and stability in later large-scale automation and multi-block structure scenarios.

To ensure the best gaming experience, we strongly recommend using PrismLauncheras your preferred launcher. Using other launchers may lead to resource loading errors or loss of vanilla item modified recipes, etc., which will affect normal gameplay.

If you only want to play in offline mode (i.e., without a legitimate account), you can download this version:Diegiwg/PrismLauncher

In the project's ReleasesPage DownloadGregTech.Odyssey-[version number].zipThe modpack file, and import it into Prism Launcher to create an instance. After completing the import, please take the instance'sJava version switched to Java 25and appropriately adjust the memory allocation based on device performance.

The difficulty of 0.5.6 is an item in the mod configuration, and can be set in Main Interface → MOD → Search GTOCore → Configuration → Gameplay → Game Difficulty adjust in (you can also set it directly on the Create New World screen); after adjusting, please be sure toRestart the game.Never switch the game difficulty during gameplay, otherwise it may cause the save file to be inaccessible.

Note: Starting from 0.6.0, the difficulty has been changed to the “Difficulty Rules” system. The above path and options no longer exist in 0.6.0; for 0.6.0, please refer to GTO 0.6.0 Installation and Update Guide. For differences between difficulties, please refer to Difficulty Features Guide.

GTO currently supports Java 21, 25, 26. We recommend you use Java 25. We may change the compatible Java versions at any time.

Please use Java25 to enter the game, and check the option to skip Java compatibility check

Visit Releases page, download the latest GregTech.Odyssey-[version number].zip client pack.

It is recommended to create a new instance, import the new version of the modpack as a new instance, and then copy your personal data from the old version over;Do not directly extract and overwrite the old instance, the old instance can be kept as a backup first. Copy the following folders or files from the old version to the same location in the new instance (when encountering files with the same name, selectOverwrite, and skip any that do not exist in the old instance):

1. local (FTB client settings)

2. saves (world saves)

3. backups (automatically backed-up saves)

4. gtceu (ore vein markers)

5. options.txt (game settings and key bindings)

6. xaero (map data)

7. emi.json (EMI bookmarks)

8. servers.dat (multiplayer server list)

9. resourcepacks (resource packs, as needed)

10. shaderpacks (shaders, as needed)

11. ae2 (AE terminal pinned items, as needed)

Note：Do not copy mods folder. New versions of mods include upgrades and additions/removals; copying the old mods will cause duplicates or version mismatches. If you have added mods yourself, please place the corresponding jar separately into the new instance's mods directory.

• During modpack installation, there will be some optional mods; you can go to Optional Mods Introduction · gtowiki to view the introduction

• The server pack installs most optional mods by default (hang-glider disabled by default); server owners can check the optional mod list themselves to add or remove them

• Do not add I18N; it will overwrite the modpack's Chinese localization resources and cause translation issues (Chinese players)

• Do not add additional AE2 add-on mods. This modpack uses a self-forked and maintained version of AE2, which is likely incompatible with mainstream AE2 add-on mods.