A Reddit user called flexww ran an AI agent on the rea repository and, in roughly an hour, had a working Gothic 3 world viewer that lets you fly around Myrtana and load locations on the fly.
What the creator built and found in the engine
Flexww wrote that he tried the rea tool from GitHub simply out of curiosity. He had long wanted to understand Genome, the engine behind Gothic 3. An hour later, he had a viewer that let him fly freely through the world.
Trees are placeholders for now: the game used SpeedTree, whose format the creator hasn't investigated yet. The screenshot shows a castle, a waterfall and houses, with bright green cones standing in for the conifers. Along the way, he also asked the agent to collect interesting findings.
SpeedTree is a technology for rendering vegetation in 3D graphics, developed by Interactive Data Visualization, Inc.
Here's what the agent found:
- The SCM.dll library contained a Perforce version control client that had made its way into the release build.
- Collision mesh files with the .xnvmsh extension contain the sequence CD CD CD CD, a memory fill pattern used by MSVC debug builds, leading the creator to believe they were written in debug mode.
- The engine saves structures using memcpy, leaving fragments of text in empty space and padding, such as “MaxShaderV” and “tle walls.;;Du w” (“Du” is German for “you”).
- Every property set belonging to a serialised entity ends with the marker 0xDEADC0DE (Dead Code).
- Genome's string tables begin with 0xDEADBEEF (Dead Beef).
🔥 What this means for Gothic 3 modders and fans: there's no ready release here, but viewing the world without the original engine is a substantial step. To me, the most valuable part is being able to extract the map, objects and location layout from the files, which could help with utilities, fixes and possibly a move to another engine. For now, it's one person's experiment, with finished tools still a long way off.
What we know about Genome, and why people are interested
Piranha Bytes released Gothic 3 in 2006, and its Genome engine was never opened up for broad study. That makes any information about file formats and world structure valuable to modders, who previously had to piece it together bit by bit. I covered one of the best-known and most accomplished Gothic 3 mod packs in my article on Union Plus. Another fan project, Gothic 2 Beyond, is bringing Gothic 3's world into the second game.
Could Gothic 3 be moved to another engine?
People in the comments immediately suggested porting the game to Unreal Engine 5. The creator replied that it would be technically possible, but that he thought a custom engine along the lines of OpenGothic would be a better fit. There are no official plans or announcements here; it's simply a community discussion.
I'd treat the findings cautiously: conclusions such as “a debug build wrote these files” remain interpretations by the creator and the agent, without independent verification so far. If enthusiasts get the program to read trees and other formats, it could inspire another wave of projects. I collect news like this in the modding news section.
