Let’s start with the cold, hard numbers. Train Simulator Classic is not a live-service game; it is a platform. The base game (which often goes on sale for $5-$10) includes roughly 3-4 routes and a handful of trains. The rest is DLC.
If you want, I can:
In Train Simulator, a locomotive requires specific sound packs, cab packs, and asset packs to work. A legal Steam purchase auto-downloads these. A repack often misses one obscure asset pack from 2012. The result? You load a route and see only grey blobs. The game crashes every 20 minutes. train simulator classic all dlc price repack