If you’d like a fair review of the legitimate version of Trainz Simulator 12 (e.g., its route building, physics, or compatibility with modern systems), let me know and I’ll be glad to help.
: TS12 is frequently on sale on Steam. Buying it here automatically handles the CD key and links it to your Steam ID, ensuring the "work" part is guaranteed.
If you're actually looking for legitimate help with the game (e.g., you bought it and lost your key, or it's not working), I can write that instead. Just let me know.