Bethesda Sues Warner Bros for Copying Fallout Shelter With New Westworld iOS Game

Warner Bros' new Westworld game for mobile devices is a "blatant rip-off" of Bethesda game Fallout Shelter, according to a lawsuit Bethesda filed in a Maryland U.S. District Court this week.

At issue are the similarities between the two games. In Fallout Shelter, which was first released in 2015, you run an underground bunker in the Fallout universe, directing your bunker inhabitants to build and run new facilities, go out on expeditions, and more, with the ultimate goal of building up the bunker.


Westworld, based on the popular HBO show and released this week, uses a similar concept, with an underground Delos facility that players are required to build out to create AI hosts and satisfy guests in the park. The ultimate goal is to build up your underground Westworld facilities along with the above-ground park.


In the lawsuit, which was shared by Polygon, Bethesda accuses Warner Bros and game developer Behaviour Interactive of breach of contract, copyright infringement, unfair competition, and misappropriation of trade secrets. Behaviour Interactive worked on both Fallout Shelter and Westworld.

The Westworld game, says Bethesda, uses the same game design, art style, animations, and features as Fallout Shelter, in addition to stealing copyrighted computer code created for Fallout Shelter. As evidence for this, Bethesda claims Westworld has a unique bug that was also found in early builds of Fallout Shelter.

falloutshelter

Fallout Shelter

According to Bethesda, Behaviour Interactive utilized its restricted access to Bethesda's intellectual property, including copyrighted code, to reduce costs and development time to bring Westworld to market faster.

The Westworld game is a blatant rip-off of FALLOUT SHELTER. Working with the same copyrighted computer code used by FALLOUT SHELTER, Westworld has the same or highly similar game design, art style, animations, features and other gameplay elements as FALLOUT SHELTER, all of which are owned by Bethesda.

Behaviour's breach of its contract with Bethesda is evidenced by the gameplay of Westworld, which uses the same copyrighted computer code created for Bethesda's FALLOUT SHELTER game. Behaviour's use of the computer code owned by Bethesda to develop Westworld even included the very same 'bugs' or defects present in the FALLOUT SHELTER code.

It's impossible not to see the similarities between Fallout Shelter and Westworld, and as is pointed out in the lawsuit, several reviews and stories on the Westworld game that have come out over the last few months have noted those similarities. VentureBeat, for example, said in March that the "side-view user interface looks a lot like Fallout Shelter," while ShackNews said "Westworld mobile is definitely taking a page out of the Fallout book," during the same timeframe.

westworld

Westworld

In light of the alleged intellectual property theft, Bethesda has asked the court for a jury trial, statutory damages, and actual damages, along with restitution and lawyers fees and costs. The company is also asking for every version of the Westworld mobile game to be removed from distribution.

Popular Stories

Apple Announces Special Event in New York Feature

Apple Announces Special Event in New York, London, and Shanghai on March 4

Monday February 16, 2026 6:05 am PST by
Apple today announced a "special Apple Experience" in New York, London, and Shanghai, taking place on March 4, 2026 at 9:00am ET. Apple invited select members of the media to the event in three major cities around the world. It is simply described as a "special Apple Experience," and there is no further information about what it may entail. The invitation features a 3D Apple logo design...
Apple Announces Special Event in New York Feature 1

Apple Event on March 4: Here's What to Expect

Tuesday February 17, 2026 8:08 am PST by
Apple on Monday invited selected journalists and content creators to a "special Apple Experience" on Wednesday, March 4 in New York, London, and Shanghai. At an Apple Experience, attendees are typically given the opportunity to try out Apple's latest hardware or software. Following the launch of Apple Creator Studio last month, for example, some content creators attended an Apple Experience...
CarPlay Liquid Glass Dark

iOS 26.4's New CarPlay Video Feature Shown in Action

Wednesday February 18, 2026 9:29 am PST by
Back at WWDC 2025, Apple revealed that it was planning to allow CarPlay users to watch video via AirPlay in their vehicles while they are not driving, and the first beta of iOS 26.4 suggests the feature may be nearing availability. There are several new references to CarPlay video streaming functionality within the iOS 26.4 beta's source code. The feature is not yet visible to users, but...
iphone 17 pro green

iPhone 17 Pro Max Curiously Becomes Most Traded-In Smartphone

Wednesday February 18, 2026 9:13 am PST by
New trade-in data indicates that Apple's iPhone 17 Pro Max has rapidly become the single most traded-in smartphone. According to a new report from SellCell, Apple's latest flagship iPhone has quickly risen to the top of the independent trade-in market, accounting for 11.5% of all devices appearing in the top-20 trade-in rankings just months after release. The analysis is based on SellCell...
Apple Announces Special Event in New York Feature 1

Rumor: Apple to Announce Multiple New Products in First Week of March

Tuesday February 17, 2026 6:35 pm PST by
Apple on Monday invited selected journalists and content creators to a "special Apple Experience" on Wednesday, March 4 in New York, London, and Shanghai. And now, rumors are surfacing about Apple's broader plans for that week. Daring Fireball's John Gruber today guessed that Apple will announce new products on a day-by-day basis from Monday, March 2 through Wednesday, March 4:What strikes...

Top Rated Comments

Michael Goff Avatar
100 months ago
Very interesting. I would think HBO will argue that their game is a type of "genre", and thus can't infringe on copyright - similar to many driving, racing, or fighting games. However it does look almost identical, and Bethesda is one of the few mobile developers with a bank account.
It's not just that it looks similar, it apparently has some of the bugs that Fallout Shelter had in the beginning. They're claiming the company that they paid to make Shelter took the code and basically sold it again.
Score: 12 Votes (Like | Disagree)
nwcs Avatar
100 months ago
1st
Congratulations. You win 10 internet points.

On topic: It sure looks like infringement. Normally I wouldn’t think they would have a chance but there’s enough here and if the bug is specific enough that was apparently duplicated they might convince someone that there’s fire with that smoke. Good luck to them, though. It’s not easy to win these.
Score: 10 Votes (Like | Disagree)
ActionableMango Avatar
100 months ago
Boy you can really tell who read the article before commenting, and who didn't.
Score: 8 Votes (Like | Disagree)
100 months ago
Downloading Westworld NOW before it gets pulled. Also mastered Fallout Shelter.
Score: 8 Votes (Like | Disagree)
100 months ago
My bet is Bethesda will lose.
Why? I think Bethesda has grounds for the lawsuit and and a lot of the elements of the game are carbon copied from Fallout shelter.
Score: 8 Votes (Like | Disagree)
100 months ago
As an IP attorney that played both games, this will come down to the vagrancies of the contract. It's a complete loser as a straight up IP lawsuit.

The plaintiff faces a tough task -- all of the presumptions will be on the defendant's side.
Score: 7 Votes (Like | Disagree)