
GregTech · Odyssey
GregTech · Odyssey
GregTech-Odyssey is a performance-obsessed, tech-focused GregTech modpack — built to give players a diverse and genuinely challenging experience on top of modern GregTech.
Parallel architecture · super molecular assembler
Compute response · millisecond AE rebuild
Storage breakthrough · beyond the LONG limit
Full experience · every voltage tier
Sections
05Guides
A player guide section anyone can edit. Post your tutorials, tips, and walkthroughs, and help grow the wiki together.
OpenDocs
Official documentation maintained by the dev team — mechanics, systems, and reference material.
OpenChangelog
Update and change logs, compiled from the official repository's commits and summarized by community members.
OpenOI · OII
OI / OII industrial mod test feedback, mechanics discussion, and version records.
OpenServers
Community servers submitted by players — not official. Find a place to play here.
OpenGallery
From orbital stations to the Eye of Hongmeng
Runtime particle effects and energy beams build an Odyssey world where technology and magic coexist.

Space Stations
Self-contained orbital stations with integrated deep-space exploration — no longer a bare platform. Modular components, each compartment with its purpose, assembling your interstellar outpost from scratch.


Mega Structures
350+ multiblock machines where technology and magic coexist. From power furnaces to sky-piercing towers, the runtime particle effects and energy beams are stunning.


Production Bases
Large-scale industrial production, precision processing, and the ultimate resource — the Eye of Hongmeng.



Core advantages
Performance & optimization
The core systems are rebuilt from the ground up to squeeze every last millisecond.
AE system
09- Super molecular assembler runs INT×N in parallel
- Millisecond-level compute response
- Smart loop detection prevents deadlocks
- Unlimited storage capacity via BIGINT
- Recipe search rebuilt on raw-material hash indexing
- Full wireless network coverage
GT machines
10- Batch processing
- Parallel logic rewrite (4 calculations folded into 1)
- Values breaking past the INT ceiling
- Machine combination modes
- Machine module gameplay
- Optimized structure detection
Mechanics
New mechanics & systems
Every voltage tier from LV to MAX, a quest book up to UEV, and 300+ multiblock structures with full effects.
Thread storage
Run multiple threads on a single machine.
Blueprint assembly rewrite
Auto-doubling on AE dispatch, with multiple assembly options.
Shortfall crafting
Keep crafting even when raw materials run short.
Magic × Tech
Deep Mixin optimization, EMI enhancements, accelerated magic-tech fusion.
Begin your Odyssey
Download the pack and start playing, or browse the community-built wiki.