The first time Kotaku reported on the Westworld mobile game, this was the headline: Westworld's Video Game Looks a Lot Like Fallout Shelter. Three months after that story came this: Bethesda Sues Makers of Westworld Game, Saying It Uses Fallout Shelter's Code. That was June 2018, and two weeks ago the lawsuit was settled, accompanied by this tight-lipped statement from Bethesda:
"Bethesda Softworks and Behaviour Interactive jointly announced today that the parties have amicably resolved the lawsuit Bethesda brought against Behaviour and others related to the Fallout Shelter and Westworld mobile games."
That amicable resolution seems to have involved removing the Westworld mobile game from app stores, and setting a date for the game's servers to be closed.
— Westworld Mobile (@WestworldMobile) January 15, 2019
This seems a bit rough on players who've spent money in the game, because Westworld was one of those titles happy to offer IAPs ranging from a few quid up to £99. But there probably wasn't any other option because, going on the original lawsuit, it looked like Bethesda had Behaviour by the short-and-curlies.
It wasn't only the more obvious stuff that gave Bethesda's allegations credence but, memorably, the fact that the games had some of the same bugs in them. The lawsuit cited an example from Westworld's 'demonstration' mode:
“Specifically, the view is out-of-focus and the scene that appears is far to the right and below the targeted landscape image. It is as if a camera capturing the scene had been inadvertently pointed to the lower right foreground and then slowly refocuses on the central image. The identical problem appeared in initial versions of Fallout Shelter but was addressed before Fallout Shelter was released to the public.”
If you're sad at missing out on the game, don't be. Westworld had some surface charm but, like every game in this style, rapidly became a repetitive and bottlenecky grind-fest. If you're really sad about missing out then, hey, I hear there's some post-apocalyptic game that's pretty similar.