Kabam Announces WB All-Star Mayhem for Mobile
The multiverse crossover RPG features Warner Bros. animated and franchise characters and begins limited regional testing this month.
Updated on Nov. 5, 2026 in Entertainment — General
Kabam has announced WB All-Star Mayhem, a mobile RPG for iOS and Android. The multiverse crossover brings together Warner Bros. animated and franchise characters, including figures from Adventure Time, Steven Universe, Samurai Jack, and Scooby-Doo.
Why it matters
The game is a new entry in the crowded market for crossover franchise titles, a segment that has seen mixed results in recent years. Kabam, the developer of Marvel: Contest of Champions, is bringing its experience with licensed mobile games to a broad lineup of Warner Bros. properties.
The announcement offers no sales or player figures, so its reception is unmeasured. The only comparator in the source is Multiversus, which was pulled from storefronts roughly two years after launch, and it is not stated whether WB All-Star Mayhem will follow a different path.
The players
Kabam
Kabam is a mobile game developer best known for Marvel: Contest of Champions, and it is the studio developing WB All-Star Mayhem.
The details
Players control a team of iconic characters to stop Brain from Animaniacs, who obtains a universal remote and intends to take over each universe in turn. The game is a mobile RPG built around the multiverse premise.
Timeline
November 5, 2026: WB All-Star Mayhem is announced for iOS and Android.
November 2026: Limited regional testing begins.
Entertainment Industry Dynamics
WB All-Star Mayhem follows the multiverse crossover format of Multiversus, which Warner Bros. pulled from storefronts about two years after its launch. The studio behind Multiversus was also shuttered, which makes this new mobile entry a test of whether the concept can sustain a live-service game.
Players on iOS and Android will be able to try the game during limited regional testing beginning in November 2026. No broader release date, pricing, or purchase details have been announced yet.
The takeaway
Warner Bros. is again testing whether a multiverse crossover can work as a mobile game after Multiversus was withdrawn. Readers interested in the game should watch for the regional test and any announced release details.
What happens next
Limited regional testing of WB All-Star Mayhem begins in November 2026.
Further reading
For more on the broader entertainment landscape, see Entertainment — General.
