PC $17.49 Region US
Games Simulation Train Simulator: Union Pacific Heavy Challenger Steam Loco Add-On
Train Simulator: Union Pacific Heavy Challenger Steam Loco Add-On: header artwork
Simulation · Smokebox

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

Train Simulator: Union Pacific Heavy Challenger Steam Loco Add-On
Windows ESRB · Everyone
Positive · 96% of 24
DeveloperSmokebox
ControllerFull
Buy now Price verdict · US updated 8 hr. ago

Well reviewed at 96% positive. The current price is near its recorded low.

Why this verdict
Lowest since 7 Jul 2026 $17.49 · 20 days ago
Current discount -30% off $24.99
Player reviews 96% positive of 24
Quality score 96/100 · small sample
Value score 100/100

Price memory

Official-store evidence for this region · US

Price comparison supported
  1. Current official price $17.49
  2. Regular price $24.99
  3. Recorded low $17.49
  4. Compared with usual sales Not recorded
  5. Observed sale intervals 13.6 to 13.6 days · median 13.6 days
  6. Interval samples 1
  7. Observed window Jul 7, 2026 to Jul 21, 2026 · 13.6 days
  8. Confidence low

Offers

Official store prices and labeled keyshop comparisons

Official stores (1)
Steam
checked 8 hr. ago Lowest price
Store low $17.49 · Lowest across stores $17.49
Steam, official store, 30% off, $17.49
$17.49 Buy on Steam
Direct store link. Payment stays with the store.
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Price history

Accepted price history and recorded lows

Historical lows
Lowest since 7 Jul 2026 $17.49 2026-07-07
Lowest since 7 Jul 2026 $17.49
Lowest since 7 Jul 2026 $17.49
Current $17.49
Sale cadence
Recorded sale starts 2
Price events From the accepted price history
Jul 21, 2026
Sale started · -30% to $17.49
Jul 10, 2026
Sale ended · back to $24.99
Jul 7, 2026
Lowest since 7 Jul 2026 $17.49

About this game

What this game is, in the developer's words

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.”

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:

  • Extra 3989 PFE EB Part 1
  • Extra 3989 PFE EB Part 2
  • Take Stock of the Situation

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!

Key Features


  • Union Pacific Class 3900-class 4-6-6-4 Challenger steam locomotive
  • Three Union Pacific livery variations
  • Denver & Rio Grande Western (D&RGW) livery
  • realism, detail, and performance authenticity
  • Nearly 90 controls, gauges, and animations in the operating cab
  • Complex and simple control options making the locomotive accessible to all
  • Auto-fireman and auto-engineer options
  • Realistic air braking, firing, water usage, sanding, and additional operating features
  • High detail and standard detail visual models
  • Customizable details
  • Authentic sounds
  • Period appropriate refrigerator cars and UP CA-4 caboose
  • Three career scenarios on the Train Simulator Class Wasatch Grade route
  • 72-page informative manual
  • Quick Drive compatible
  • Download size: 1.0GB

Media

Trailers and screenshots from the store page

Games like Train Simulator: Union Pacific Heavy Challenger Steam Loco Add-On

Shared tags, not the same series.

Train Simulator: Union Pacific Heavy Challenger Steam Loco Add-On price history and current deals

Train Simulator: Union Pacific Heavy Challenger Steam Loco Add-On for PC currently sells from $17.49 at authorized stores. Lowest since 7 Jul 2026: $17.49. That is 30% off the $24.99 list price.

Train Simulator: Union Pacific Heavy Challenger Steam Loco Add-On reviews, playtime, and age rating

24 people have reviewed Train Simulator: Union Pacific Heavy Challenger Steam Loco Add-On. 96% are positive. Steam calls that Positive. ESRB rates it Everyone.

Frequently asked questions

Answered from this game's own data. Where I have none, I say nothing.

How does the current Train Simulator: Union Pacific Heavy Challenger Steam Loco Add-On price compare?
The price verdict is buy. The lowest current official price is $17.49.
Which stores list Train Simulator: Union Pacific Heavy Challenger Steam Loco Add-On?
Train Simulator: Union Pacific Heavy Challenger Steam Loco Add-On is tracked at Steam. This section lists authorized stores and links to their store pages.
Where can I buy Train Simulator: Union Pacific Heavy Challenger Steam Loco Add-On cheap?
From $17.49 at Steam right now. That is 30% off the $24.99 list price. Its recorded low is $17.49, set on 2026-07-07.
Is Train Simulator: Union Pacific Heavy Challenger Steam Loco Add-On worth playing?
24 people have reviewed Train Simulator: Union Pacific Heavy Challenger Steam Loco Add-On. 96% are positive. Steam calls that Positive.
What age rating does Train Simulator: Union Pacific Heavy Challenger Steam Loco Add-On have?
Train Simulator: Union Pacific Heavy Challenger Steam Loco Add-On is rated Russia 0+, Brazil l, ESRB Everyone, New Zealand g, Australia g, PEGI 3+, USK 0+ across boards.
Scores
Steam reviews Positive · 96%
96% positive of 24
Media (7)
Tech
ControllerFull
Requirements
System requirements platform
Minimum
Minimum for 32-bit:
  • OS *: 32-bit Windows 7 Service Pack 1, 8.1 or 10 Required (Other OS versions and types are not supported)
  • Processor: Intel Core-i3 4330 3.50 GHz Dual Core or AMD A8 6600K 3.90 GHz Quad Core or Better
  • Memory: 4 GB RAM
  • Graphics: NVIDIA GeForce GTX 750 Ti or AMD Radeon R9 Graphics with 1 GB Dedicated VRAM or Better
  • DirectX®: 9.0c
  • Network: Broadband Connection (May incur additional costs for use)
  • Storage: 40 GB or more available space (Additional Add-Ons will require more)
  • Sound Card: DirectX Compatible Audio Device
  • Additional Notes: Requires mouse and keyboard or Xbox Controller
Laptop, Notebook, Mobile or Low Power versions of the above specifications (including Intel or Integrated Graphics) may work but are not supported. Updates to Chipset, Graphics and Audio Device Drivers may be required. For information relating to recommended specifications for Train Simulator 64-bit, please refer to the Train Simulator 2022 User Guide.
Recommended
Recommended for 32-bit:
  • OS *: 32- or 64-bit Windows 7 Service Pack 1, 8.1 or 10 Required (Other OS versions and types are not supported)
  • Processor: Intel Core-i5 4690 3.50 GHz Quad Core or AMD Ryzen 7 1700 3.80 GHz Quad Core or Better
  • Memory: 4 GB RAM (maximum possible under 32-bit Windows)/16 GB or Better (For 64-bit Windows)
  • Graphics: NVIDIA GeForce GTX 970 or AMD Radeon RX 480 with 4 GB Dedicated VRAM or Better
  • DirectX®: 9.0c
  • Network: Broadband Connection (May incur additional costs for use)
  • Storage: High Performance SSD Recommended with 40 GB or more available space (Additional Add-Ons will require more)
  • Sound Card: DirectX Compatible Audio Device
  • Additional Notes: Requires mouse and keyboard or Xbox Controller
Laptop, Notebook, Mobile or Low Power versions of the above specifications (including Intel or Integrated Graphics) may work but are not supported. Updates to Chipset, Graphics and Audio Device Drivers may be required. For information relating to recommended specifications for Train Simulator 64-bit, please refer to the Train Simulator 2022 User Guide.
Facts
DeveloperSmokebox
PublisherDovetail Games
ModesSingle-player
Steam features
Trading CardsWorkshopCloudFamily Sharing
Ratings
Russia0+
Brazill
ESRBEveryone
New Zealandg

Online interactivity and in-game purchases

Australiag

Online interactivity and in-game purchases

PEGI3+

In game purchases

USK0+
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