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

Train Simulator: Union Pacific Big Boy Steam Loco Add-On

Train Simulator: Union Pacific Big Boy Steam Loco Add-On
ESRB · Everyone
Very Positive · 95% of 63
DeveloperSmokebox
ControllerFull
Buy now Price verdict · US updated 2 days ago

Well reviewed at 95% positive. The current price is near its recorded low.

Why this verdict
Lowest since 7 Jul 2026 $17.49 · 19 days ago
Current discount -30% off $24.99
Player reviews 95% positive of 63
Quality score 95/100
Value score 100/100

Offers

Official store prices and labeled keyshop comparisons

Official stores (1)
Steam
checked 2 days 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 ultimate experience of taking the throttle of American steam – big steam – awaits you with the magnificent and extraordinary Union Pacific 4-8-8-4 Big Boy as created by Smokebox and now available for Train Simulator!

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 the Game

BIG BOY! In size, no steam locomotive was ever greater, and few if any locomotives were more legendary than Union Pacific’s 4-8-8-4 behemoths. Among Train Simulator developers, few if any are more renowned -- for extraordinary realism, operational fidelity, and magnificent detail -- than Smokebox. And now comes the Smokebox Union Pacific Big Boy!

Union Pacific’s famed 4-8-8-4s were designed with a specific task at hand – being able to handle 4,400-ton trains, without helpers, over the rugged grades of the railroad’s crossing of Utah’s Wasatch Mountains. Designers of the UP, together with the American Locomotive Works (Alco) went to work and in 1940 Alco constructed a group of twenty leviathan 1.3-million-pound, 132-foot-long 4-8-8-4 articulated locomotives. During construction of the first locomotive – Union Pacific 4000 – a worker scrawled “Big Boy” in chalk on the locomotive’s smokebox door and the name, like the locomotive, became forever iconic.

During World War II, Union Pacific acquired an additional five Big Boys and in addition to working the Wasatch crossing, the railroad’s fleet of 25 Big Boys became regulars on UP’s Sherman Hill in Wyoming. The last of the 4-8-8-4s remained on the UP roster through the late 1950s and befitting the type’s fame, no less than eight were preserved. In 2019, as part of the 150th anniversary celebration of the American transcontinental railroad, Union Pacific Big Boy 4014 was returned to service as a member of UP’s Heritage Fleet.

Developer Smokebox is highly respected for its authentic re-creations of steam locomotives – including its AT&N 2-8-0 Consolidation and superb Union Pacific FEF-3 4-8-4. And now, the Smokebox Union Pacific 4-8-8-4 takes Smokebox’s artistry and realism to even greater levels! In addition to an exacting replication of the Big Boy’s operating controls, characteristics, sounds, and visual details, the Smokebox 4-8-8-4 features innovative features including an optional auto-fireman and auto-engineer, making the locomotive accessible to all users. And the Big Boy also features a range of customization details, a selection of era-authentic freight rolling stock, and realistic scenarios on the Train Simulator Union Pacific Wasatch Grade: Ogden - Evanston Route (route available separately).

The ultimate experience of taking the throttle of American steam – big steam – awaits you with the magnificent and extraordinary Union Pacific 4-8-8-4 Big Boy as created by Smokebox and now available for Train Simulator!

Included Scenarios


Four career scenarios featuring the Union Pacific Big Boy on the Train Simulator Union Pacific Wasatch Grade: Ogden - Evanston Route are included:

  • Big Boy Max Tonnage EB, Part 1
  • Big Boy Max Tonnage EB, Part 2
  • Big Boy Max Tonnage WB, Part 1
  • Big Boy Max Tonnage WB, Part 2

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


  • Ultra-realistic Union Pacific 4-8-8-4 “Big Boy” steam locomotive
  • Complete and authentic operating controls and characteristics
  • Optional configurations for all levels of difficulty from manual operations to auto-fireman and auto-engineer assists, the locomotive is also compatible with Simple Controls
  • Three locomotive livery variations
  • A variety of customizable locomotive details
  • Actual 4-8-8-4 locomotive sounds
  • Late-1940s era-authentic freight rolling stock in multiple liveries and with a variety of loads; equipment includes boxcars, refrigerator cars, flat cars, hopper, tank car, and Union Pacific CA-4 steel caboose in brown and yellow liveries
  • Four career scenarios featuring the Union Pacific Big Boy on the Train Simulator Union Pacific Wasatch Grade: Ogden - Evanston Route
  • Quick Drive compatible
  • Download size: 798.5MB

Media

Trailers and screenshots from the store page

Games like Train Simulator: Union Pacific Big Boy Steam Loco Add-On

Shared tags, not the same series.

Train Simulator: Union Pacific Big Boy Steam Loco Add-On price history and current deals

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

63 people have reviewed Train Simulator: Union Pacific Big Boy Steam Loco Add-On. 95% are positive. Steam calls that Very 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 Big Boy 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 Big Boy Steam Loco Add-On?
Train Simulator: Union Pacific Big Boy 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 Big Boy 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 Big Boy Steam Loco Add-On worth playing?
63 people have reviewed Train Simulator: Union Pacific Big Boy Steam Loco Add-On. 95% are positive. Steam calls that Very Positive.
What age rating does Train Simulator: Union Pacific Big Boy Steam Loco Add-On have?
Train Simulator: Union Pacific Big Boy 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 Very Positive · 95%
95% positive of 63
Media (6)
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 2019 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 2019 User Guide.
Facts
DeveloperSmokebox
PublisherDovetail Games - Trains
ModesSingle-player
Steam features
Trading CardsWorkshopCloudFamily Sharing
Ratings
Russia0+
Brazill
ESRBEveryone
New Zealandg
Australiag
PEGI3+
USK0+
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