Introduced in Trainz Railroad Simulator 2004 and available for all versions of Trainz was the UP Big Boy steam locomotive.Today, the Big Boy arrives to Trainz Simulator 3! Take on the challenge of the included mission pack and take a coal train over the Rockies with UP 4014 – the only Big Boy steam locomotive that has been restored to operational status and runs today on the UP mainlines.Included as a bonus, the UP Centennial DD40X locomotive – the largest diesel locomotive ever built.Get both locomotives for only $0.99 today! Click to visit the page Enjoy the new DLC! — HTA Team The post Big Boy in the Rockies Mission Pack appeared first on Hiawathamr Trainz Add-ons. Source: https://www.hiawathamr.com/blog/2025/08 ... sion-pack/
