: Historically, Trainz Classics 3 (TC3) was a major milestone for the franchise, focusing on the Settle-Carlisle line. Many Thomas assets built for these older engines have been modernized by creators to work in newer mobile iterations through specific file conversions.

If you are looking to expand your Trainz Simulator 3 experience with custom assets, follow these general community-led steps:

Unlike the PC versions of Trainz (such as Trainz 2019 or Trainz 22), Trainz Simulator 3 for mobile is a more closed ecosystem. This means you won't find an official "Thomas" button in the menu. However, here is how the keyword relates to current gameplay: