This content requires the base game Train Simulator 2017 on Steam in order to play.

User reviews:
Mostly Positive (28 reviews) - 78% of the 28 user reviews for this game are positive.
Release Date: Nov 23, 2012

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Downloadable Content

This content requires the base game Train Simulator 2017 on Steam in order to play.

Buy Train Simulator: Union Pacific Challenger

Packages that include this game

Buy Big Boy + Challenger Twin Pack

Includes 2 items: Train Simulator: Union Pacific Big Boy Loco Add-On, Train Simulator: Union Pacific Challenger Loco Add-On

Buy Train Simulator: Steam Collection

Includes 6 items: Train Simulator: Class A4 Pacifics Loco Add-On, Train Simulator: LNER Class A3 ‘Flying Scotsman’ Loco Add-On, Train Simulator: Southern Pacific Cab Forward Loco Add-On, Train Simulator: Thompson Class B1 Loco Add-On, Train Simulator: Union Pacific Big Boy Loco Add-On, Train Simulator: Union Pacific Challenger Loco Add-On


Special Edition

The Classics Range features a selection of must-have products at value for money prices from the TS back catalogue.

About This Content

The mighty Union Pacific Challenger 4-6-6-4 is now available for Train Simulator, featuring four exciting and challenging scenarios specially created for the Sherman Hill route.

The stiff gradients of the Wasatch Mountains demanded newer, more powerful and efficient locomotives, leading to Union Pacific’s chief engineers to design a 4-6-6-4 steam locomotive that utilised two sets of driving wheels each with their own steam cylinders. The Challenger’s impressive articulated wheel arrangement made it one of the most successful large steam locomotive designs ever developed and was considered to be one of the most technologically advanced of its kind, providing both high horsepower and efficient operations.

Their mammoth weight made the Challenger a regular sight on UP’s heavy mountainous freight routes but they were also put into service on the occasional passenger service through mountain territories to California and Oregon. In total, 252 Challengers were built between 1936 and 1943 by the American Locomotive Company and Baldwin Locomotive Works, just less than half for UP.

The Union Pacific Challenger V2.0 for Train Simulator is available in two liveries - the famous Union Pacific black livery and Union Pacific lined grey livery. Key features include TSX effects, new smoke and steam particle emitters, and enhanced cab interior.

The Sherman Hills Add-On (available separately) is required to play the scenarios included with this Add-On.


Four scenarios for the Sherman Hill route:

  • Challenger Intro Run
  • Challenger on Sherman Hill Cheyenne to Laramie
  • Challenger Working at Wycon
  • Challenger Working the BNSF Stub
More scenarios are available on 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

  • Union Pacific Challenger in Union Pacific black and lined grey liveries
  • Realistic cab interior and sounds
  • Improved locomotive physics and TSX effects
  • Realistic raindrops and correct headlight illumination
  • New smoke and steam particle emitters
  • Quick Drive compatible

System Requirements

    • OS:Windows® Vista / 7 / 8
    • Processor:Processor: 2.8 GHz Core 2 Duo (3.2 GHz Core 2 Duo recommended), AMD Athlon MP (multiprocessor variant or comparable processors)
    • Memory:2 GB RAM
    • Graphics:512 MB with Pixel Shader 3.0 (AGP PCIe only)
    • DirectX®:9.0c
    • Hard Drive:6 GB HD space
    • Sound:Direct X 9.0c compatible
    • Other Requirements:Broadband Internet connection
    • Additional:Quicktime Player is required for playing the videos
    • Additional:Quicktime Player is required for playing the videos
Customer reviews
Customer Review system updated Sept. 2016! Learn more
Mostly Positive (28 reviews)
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24 reviews match the filters above ( Mostly Positive)
Recently Posted
Munted Man
Posted: August 27
Looks a lot better than the pictures, comes with a black and a grey livery (both UP). The passenger cars and people have a bit to say for themselves though and no passenger view. Nice easy loco to drive and maintain however. 7/10
Helpful? Yes No Funny
Posted: August 18
This is a good model for Steam Locomotive and Union Pacific fans alike. It has it's pros and cons, however.

Solid Model
Decent Physics

HORRIBLE whistle and bell (that being the bell is completely unrealistic and the whistle only holds for a long time)
Only 2 numbers are visible on the numberboards on smokebox and under the cab (the numbers are 3943 and 3979) but there are different numbers on the headlight numberboards and the tender

I'm not 100% sure if I can recommend it but I will (considering the issues could be corrected)
Helpful? Yes No Funny
Posted: April 16
yes there are a few problems with it but overall it's a great add on to get.
Helpful? Yes No Funny
Posted: March 22
The Union pacific Challenger is one of the best detailed train in the game! and also my favourite! Its articulated body looks like its real and the best thing about this train is the sounds!
Helpful? Yes No Funny
Posted: February 16
I bought this engine and I got to say, it is a really nice engine and it comes in two liveries and one carear scenario and three or four standard scenarios. I recomend getting this if you like Union Pacific Steam trains and would like some scenarios for Sherman Hill.
Helpful? Yes No Funny
Posted: December 27, 2015
i got this as a gift, its good, nice train, decently fast.
Helpful? Yes No Funny
Posted: December 20, 2015
go ♥♥♥♥ your life
Helpful? Yes No Funny
Most Helpful Reviews  Overall
13 of 14 people (93%) found this review helpful
1 person found this review funny
Posted: November 22, 2014
The Pros:
A nice looking model, seemingly very realistic
nice sounding whistle
nice old-school bell
Quite a few scenarios for Sherman Hill.

The passenger cars included do NOT have a passenger view
the whistle loop is too long.
Extremely hard to see out of the cab window.

Overall, I would definitly recommend this DLC, especially to anyone who is a fan of UP steam.
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14 of 19 people (74%) found this review helpful
3 people found this review funny
Not Recommended
Posted: July 7, 2015
This review will be for the Union Pacific Challenger and Big Boy DLC. There is a litany of problems with both of these DLC packages. I will only touch on a few of the many issues.

1) There are some things that a steam locomotive has to have in order to be immersive; it must transport you to that special place where you believe that you are actually running a steam locomotive. Well….., these engines lack all of those things. Missing or broken features are many and are overwhelmingly immersion-breaking, and while these engines look like the prototypes in the academic sense, they lack many fine details. Rivets on the tender are rendered two-dimensionally. A lot of detail is missing from the tender trucks including spring-rigging, brake calipers/shoes, and brake cylinders. The headlights and tender lights do not work. Additionally, the classification lamps do not work. There are many pipes, rivets, auxiliary devices, and linkages that are missing. A prime example is the missing compensating levers (throttle reach lever on the engineer's side of the boiler). The cab interiors are just as bad, rendered in low resolution and poorly detailed. There are several missing pipes, levers, and gauges. The cab windows do not open. The roof vents do not open. The Cab signals do not work. There are no cab lights so it is pitch dark inside; all the better to hide the missing details. On the Big Boy DLC I purchased, the cab windows are obscured by a grey haze so I can't see the engineer or fireman.

2) The sounds are bad. The Challenger isn't as bad as the Big Boy, but that is not saying a lot. The chuffing of the Big Boy sound like someone using a plunger on a toilet; a kind of wheezing, squishy sound. Even worse is that the sounds for both locomotives were borrowed from two-cylindered locomotives, and poorly made ones at that. The problem with using this sound for the Big Boy and Challenger is that the Big Boy and Challenger are 4 cylindered simple articulated locomotives. Even if the poorly made two-cylindered effect didn’t sound like a dying water buffalo, a two cylindered engine chuffs 4 times per revolution of the driving wheels. By contrast, a simple articulated would have two different sets of cylinders each chuffing 4 times per revolution; they would get out of sync with one another causing a staccato rhythm, 8 chuffs total per revolution. In railroad vernacular this is called “hitting a double lick”. This sounds NOTHING AT ALL like a 2 cylindered locomotive. The Gtrax Cab Forward got this sound effect down perfectly; why DTG couldn't manage to do it for the Big Boy and Challenger is incomprehensible. Ditto for the whistle sounds, hissing steam, and the “clunking” of auxiliary devices, all of which are missing, bad quality or poorly synced. What DTG should have done was to get sound samples from the real Union Pacific Challenger #3985, using the samples for both the Challenger and the Big Boy. It would have worked beautifully, but I guess that would have been too easy to do.

3) My biggest deal-breaker when it comes to immersion with a steam locomotive is the lack of a fully functioning set of particle emitters to model the various steam and smoke exhausts on the locomotives in question. After all, if a steam locomotive isn’t steaming and smoking, it isn’t much of a steam locomotive is it? I have said it in other reviews; the smoke and steam effects of the Gtrax locomotives (SP GS-4, NKP S-2, SP&S E-1, SP Cab Forward) are practically the best in the game. Why they were not used on the Big Boy and Challenger is beyond comprehension, as it would have added immensely to the immersion of this DLC.

The smokestack exhaust looks far too thick and doesn’t dissipate the way real smoke does. Essentially it looks like a column of dirty cotton candy shooting up and out, fluffy and irregular. The emitters for the cylinder ♥♥♥♥♥ do not work. The emitters for the wheel sanders do not work. The emitters for the boiler safety valves do not work, and the emitters for the turbogenerators do not work. The emitters for the injectors and feedwater pump are not present/do not work. And there are no emitters for the stoker motor exhaust on the Big Boy ( a coal burning locomotive).

4) The performance of these locomotives is completely unrealistic. First off, the models possess far too much tractive effort, that is, low speed pulling power. While the Real Challengers and Big Boys were indeed powerful locomotives that could start and rapidly accelerate heavy trains, they didn’t accelerate to 80 mph in ten seconds.TOTALLY UNREALISTIC. On the other end of the spectrum, the horsepower curve is too weak. The real locomotives could sustain 40-60 mph speeds with heavy trains, effortlessly for hundreds of miles. These DLC engines,”run out of boiler” within a few seconds of high speed running and can’t run at all with any significant load behind them. They run out of steam and stall, forcing you to stop and build up steam again. COMPLETELY UNREALISTIC.

The only justifiable use for these locomotives is in “supporting roles” in other scenarios. For example, Elphaba makes at least two Workshop scenarios for the Smokebox F.E.F., Grain Rush ’57 and UP Overland Mail, that utilize the Challenger and Big Boy. They can be seen rolling by with their own trains; you don’t have time to notice their deficiencies because you are too busy running the F.E.F. Other than this, and similar scenario uses, I cannot understand why anyone would want this DLC.

Granted, if you were really desperate to own these, you could look for a third party software utility called Railworks Tools, donation ware that you can get here, . Additionally, the locomotive performance issues can be addressed by installing physics mods found at Railworks They are by a man who goes by the name of DtrainBNSF1 and can be found in the files section, under Accessories and Tools. Having said this, I feel most casual players don’t want to spend hours tracking down modding software and mods, learning to use and install them, only to fix some of the problems. This DLC should never have been released in it’s current form. If a game or DLC is broken, it’s broken, and no amount of tinkering is going to fix it.

Both the Challenger and Big Boy DLC were obvious “rush-jobs” cranked out without any thought to accuracy, realism, or quality control. These could possibly be the worst DLC offered for this game. The content creator who made the DLC and the people who made the release decision either didn’t like their jobs, or didn’t care about North American railroad history, both of which are bad news for a company that makes a “Train Simulator”. The decision to sell this DLC does a disservice to Dovetail Games, its other content creators who will be “tarred by the same brush”, the Train Simulator franchise, and two legendary locomotives that deserve better representation than this. My only hope is that Dovetail Games will rectify their mistake and build brand new models of both of these locomotives to the level of quality of the Smokebox F.E.F. Normally, if a DLC release is average in quality I will recommend a “buy” decision, with the qualifier that the purchaser wait for a sale. With this release however, I cannot countenance a purchase decision. The Challenger and Big Boy DLC are awful, and unless you are going to be using them as “scenery” in other scenarios, don’t buy them, period. This DLC is a TRAINWRECK, and this is coming from someone who loves North American steam locomotives and the Train Simulator game.

Final Rating: Red Block: Danger ahead. I wouldn’t buy this if I were you.
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9 of 10 people (90%) found this review helpful
1 person found this review funny
Posted: October 8, 2014
Similarly to the bigboy I recommend the challenger for the same reasons. It's a great model, good sounds, but the cab could be better. Only issue is you can't see well out the engineer's forward facing window.
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6 of 6 people (100%) found this review helpful
1 person found this review funny
Posted: February 17, 2015
Not a particularly in depth simulation, but it's the Challenger. A fun little sim when you want something a bit simpler than the FEF-3.
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5 of 5 people (100%) found this review helpful
Not Recommended
Posted: March 5
Whatever happened to the consolidation that used to come with this? Got a thumbs down from me cuz the consolidation is gone, horible physics and sounds, and RSC just did a bad job on it.
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7 of 9 people (78%) found this review helpful
1 person found this review funny
Not Recommended
Posted: August 24, 2015
Only buy this one if you want to make your collection complete. It drives, didn't encounter bugs, basically as base engine ok. However not very advanced in scripting, animations or behaviour. On sale for a few bucks it is a nice additions, not worth full price though
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4 of 4 people (100%) found this review helpful
2 people found this review funny
Posted: February 7, 2015
Engine seams to be on the gutless side.The Big Boy has more pulling power.
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2 of 2 people (100%) found this review helpful
1 person found this review funny
Posted: August 7
I owned the DLC before it was ANTIQUE!!!
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3 of 4 people (75%) found this review helpful
Not Recommended
Posted: October 13, 2015
Here we are in TS2016 and this old stalwart of a model is still chugging along in the DLC store. A Railworks 2 model (2012), this is one of the oldest DLC locos available for TS, so don't expect anything grand if you decide to purchase it.

Please take the $7.99 price tag seriously for what it is. It's at a reduced price because this mammoth is ancient (pun not intended). As part of the TS Classics range, you shouldn't expect anything technologically signifigant or magnificently designed. It may have been state of the art at the time it was released, but it pales in comparison to what is available now.

-It's the only Challenger model for TS that is available to my knowledge.
-Will serve well for scenario creators on old steam routes.
-3rd party minor upgrades are available on RWA.
-Reduced price tag that comes with the TS Classics range.

-Disgusting stock sounds
-Disgusting cab
-Disgusting exterior
-Disgusting physics
-Just Disgusting (for today's standards)

Buy it if you need it for scenarios, or if you wish to own a little piece of history, but don't buy it thinking it's good content. Perhaps one day, DTG will look back and give this loco a makeover, but don't expect that anytime soon.
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3 of 4 people (75%) found this review helpful
Not Recommended
Posted: June 28, 2015
When I first saw the pricetag, I was excited. I thought to myself, "What a great deal!" I couldn't wait for the download to finish.
Excitedly, I put the Challenger on my favorite test map, Pacific Surfliner. (Long, has many hills, and is good for finding out what a loco can do)
My exitment turned to dismay when I opened the throttle, and it all went downhill from there. Soon, I realized why it was so cheap.

The Challenger is completely unrealistic. The front engine set's number boards display a different number than the number on the cab. When the wheels are slipping, it is only the rear set of drivers, because an articulated acts like a lash up of diesels, or a double header: an engineer on each "loco" even though one is just a set of drivers.

The challenger can't keep steam up even when the throttle is closed. How do they solve this problem in the programming? When the boiler pressure hits less than 170 PSI, the generation rate shoots up, and the usage rate goes way down. (EG, the usage rate is at 2,475, it shoots down to half that, even with the throttle wide open. I gave up on using advanced controls and manual fireman when running the Challenger)

The whistle goes on for 3 seconds, even when I just tap the key.

The cylinder ♥♥♥♥♥ don't work, even though there is a valve for it in the cab, and the bell is a rapid, high pitched dingdingdingdingding, instead of a deeper, slower dong--dong--dong.

The couplers on the cars that you get are broken: once you uncouple, you cannot recouple.

There are no interiors for the passenger cars and the caboose, either. (This is a minor complaint, but it is something that I wish they had taken the time to do)

You cannot use the in-cab injectors, you HAVE to use the toolbar.

The Challenger is a well modeled locomotive, but that does not redeem it. The running characteristics are junk. It cannot even reach 70 mph, which the real Challenger could do easily!
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