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Train Simulator: Union Pacific Heavy Challenger Steam Loco Add-On - Detailed Information

Train Simulator: Union Pacific Heavy Challenger Steam Loco Add-On
Supported OS Windows
Release Date 28 July 2022
Developers Smokebox
Sold copies ~ 10,000
Buy for $24.99
You will be redirected to the official Steam website
About this dlc   Hardware Requirements

Required DLC

https://store.steampowered.com/app/980544


Featured DLC

https://store.steampowered.com/app/1515065


About the Game

Pro Range


The Pro Range is aimed toward the serious train simulation enthusiast looking for a complex machine to master. Each product is designed to provide education and entertainment for users. Xbox controller and HUD interface support do not come as standard and users will need to read the accompanying documentation to fully understand the operation of this advanced simulation.

About This Content


The last decades of the steam era in America produced many of the largest, best, and most extraordinary locomotives ever to grace steel rails – and among these landmark locomotives was Union Pacific’s magnificent 3900-class 4-6-6-4 “Challenger.”

And now, from steam locomotive creator extraordinaire Smokebox, comes the Union Pacific Heavy Challenger for Train Simulator Classic!

Smokebox locomotives, including its highly acclaimed Union Pacific FEF-4 4-8-4 and legendary Union Pacific Big Boy, are renowned for their superb quality, exquisite detail, authentic controls, and realism of performance – and the Union Pacific Heavy Challenger extends all those features to yet another level.

Constructed by Alco (American Locomotive Works) between 1936 and 1945, Union Pacific’s roster of 4-6-6-4s, built in several configurations, numbered 105 strong. The Challenger as developed by Smokebox meticulously re-creates the forty-five UP 4-6-6-4s built during the World War II years of 1943 and 1944. Designed to haul tonnage on Union Pacific’s transcontinental route but equally adept at hustling passenger trains, these superlative locomotives served the Union Pacific into the late 1950s and one – Union Pacific 3985 – went on to contemporary fame as a member of Union Pacific’s Heritage Fleet.

As the Challengers rolled out of Alco’s Schenectady (New York) works during WWII, six virtually identical UP-design 4-6-6-4s were assigned to the Denver Rio Grande & Western (D&RGW), where the locomotives served until heading to the UP at the end of the war, then to the Clinchfield Railroad in 1947. And the Smokebox Challenger add-on includes the stylish locomotive in Rio Grande livery and details.

The Smokebox Heavy Challenger for Train Simulator Classic delivers unmatched visual realism and the full, exhilarating experience of operating this massive locomotive, with the cab of the Challenger featuring nearly 90 working controls, gauges, or animations! The 4-6-6-4 offers a real-life engineer’s railroading challenges, but it is also accessible and enjoyable whatever your level of expertise, featuring complex or simple controls and with an auto-fireman and even an auto-engineer option. The Challenger’s list of captivating features also includes customizable details and multiple cab views.

The Challenger is featured in four livery variations: Union Pacific steam-era clean and dirty; Union Pacific silver striping (as worn by UP 3985). and with D&RGW lettering. And both “HD” (high detail) and “SD” (standard detail) variants are also provided.

To put you right to work, the Challenger includes a selection of period-appropriate refrigerator cars, a Union Pacific CA-4 caboose, and a selection of three career scenarios on the Train Simulator Classic Wasatch Grade route (as developed by Milepost Simulations and available on Steam as a separate add-on). The 4-6-6-4 is also QD (Quick Drive) enabled.

Take the throttle of one of America’s greatest and most renowned steam locomotives and experience the glory days of “Big Steam” – with the Union Pacific Heavy Challenger from Smokebox!

Included Scenarios


Three career scenarios featuring the Union Pacific Challenger on the Train Simulator Classic Wasatch Grade route are included, each is duplicated for HD and SD variants:


Please Note: Union Pacific Wasatch Grade: Ogden - Evanston Route Add-On is required, as a separate purchase, in order to play the scenarios featured in this add-on.

More scenarios are available on the Steam Workshop online and in-game. Train Simulator’s Steam Workshop scenarios are free and easy to download, adding many more hours of exciting gameplay. With scenarios being added daily, why don’t you check it out now!

Click here for Steam Workshop scenarios.

Key Features



“Dovetail Games” (“DTG”) is a trading name of RailSimulator.com Limited. "Dovetail Games", “RailSimulator.com” and the “Dovetail Games Train Simulator” logo are trademarks or registered trademarks of DTG. © Copyright Union Pacific Railroad Company. 1994-2022. All other copyrights or trademarks are the property of their respective owners. All rights reserved.