Before installing any "UPD," open Trainz Launcher > Content Manager. Click File > Rebuild Database . Then, back up your existing Thomas assets. The UPD archives often overwrite existing KUID numbers.
It’s time for a major update on the .
The community continues to release high-quality assets through specialized archives and individual creators: STW3D Thomas (2026 Series)
Significant maintenance was performed on existing content:
The (often styled as "UPD" for Update ) refers to a dedicated community preservation effort within the Trainz simulation community. Its primary goal is to catalog, update, and re-release classic Thomas & Friends digital content—such as locomotives, rolling stock, and routes—that have been lost or "broken" due to software updates. Overview of the Project
on DeviantArt, featuring models based on the new series' aesthetic. Design Evolution
Alternatively, click if extracting bulk .zip items. 3. Resolve Faulty Dependencies and Errors
We aren’t just archiving the .cdp files; we are archiving the documentation. Included in this update are original readme files, tutorials, and content creation guidelines from the original creators. 🔍 Focus Areas for This Update
The relationship between Thomas & Friends and Trainz has a long, community-driven history. It began in the early 2000s with a creator known as MSTNoodle, whose simple but beloved models laid the groundwork for what would become a global community. As Trainz evolved, so did the Thomas content. Early models from before August 2016 were built for older systems, and while they can still be used in modern versions like T:ANE and TRS2019, their smoke effects are often displayed incorrectly due to changes in the game engine.
To prevent a complete loss of community history, preservationists launched the Trainz Archives platform . This decentralized web initiative indexes and preserves historical content downloads from defunct community groups, ensuring that decades of hard work remain available to the public.
The Trainz Thomas Archive is a comprehensive, community-driven collection of 3D models, routes, sessions, and dependencies designed for various versions of Trainz (from Trainz Simulator 2009 up to the latest Trainz Railroad Simulator 2022).
| Step | Tool | Action | |------|------|--------| | 1. Convert meshes | PM2IM | Convert .pm to .im, generate .lm.txt for LOD. | | 2. Fix textures | Images2TGA | Ensure .tga with alpha for windows/faces. | | 3. Update config.txt | Notepad++ | Change trainz-build to 4.6; alias obsolete kuids to modern equivalents (e.g., hornsound). | | 4. Script modernization | AssetX | Replace deprecated Thread.Sleep() with Wait() ; fix animation calls. |
: Certain creators explicitly forbid the rehosting of their models. The updated archives try to respect these boundaries by substituting missing structural assets with alternative, open-source equivalents created by active authors.