You're referring to the Regret Island Gallery Update in Brawl Stars!
: While highly rated by its niche audience for its atmosphere and multiple routes, the game is currently Windows-only . A native Android version is planned for the future, but current mobile players using JoiPlay often encounter a "black screen" bug due to plugin incompatibilities. regret island gallery upd
Here is the current status and details regarding the (officially known as Shinrabasho or Ultimate Deathly Dungeon ) in Puzzle & Dragons. You're referring to the Regret Island Gallery Update