SuperStarfighter from notapixel Studio is a wonderful in-development local multiplayer game with a big new release available.
The key thing about SuperStarfighter is the accessibility, the controls are super simple and it's easy for anyone to get into for some family-friendly fun. It uses a single button plus movement, so there's really no fussing around.
With this big update you can now actually customize the experience more to your liking. Choose with game modes to play, how many stars are needed to win and more. However, if you do have people to play with the 3/4 player arenas have been redesigned to give more room and be more fun to play. There's even a brand new game mode "slam-a-gon", along with a new playable character. Here's a quick look at the new mode, plus the Hive Filling mode in action:
The good news is the AI is much improved too and harder to beat, so if you don't have a friend with you playing the game is a lot more enjoyable. It's been kicking my butt something fierce and when you add in multiple AI, it turns into a really fun multiplayer arena game.
It's also made with Godot Engine, a powerful free and open-source game engine.