Brawl Stars is the new game from Supercell, the Clash of Clans/Clash Royale/Boom Beach people, that saw global release a couple days ago. It's a 3v3 class-based arena brawler, like if Battlerite were on your phone. Each character only has two moves (basic attack and ultimate), but Supercell being Supercell they find lots of ways to add depth, like destructible terrain and tight zoning mechanics.
I don't think this will displace Clash Royale as my primary time killer but it's good for a few minutes of action. In-game name is ezrast.
I play the shit out of Clash Royale (and Boom Beach and Clash of Clans before that), but Brawl Stars just isn't hitting it for me. I'm not feeling the depth of options that the other games had and the NPE is slow as hell before you start to get anything new to switch things up.