Super Smash Bros. Ultimate
Having trouble choosing a stage? Then select the Stage Morph option to transform one stage into another while battling—a series first! Plus, new echo fighters Dark Samus, Richter Belmont, and Chrom join the battle. Whether you play locally or online, savor the faster combat, new attacks, and new defensive options, like a perfect shield. Jam out to 900 different music compositions and go 1-on-1 with a friend, hold a 4-player free-for-all, kick it up to 8-player battles and more! Feel free to bust out your GameCube controllers—legendary couch competitions await—or play together anytime, anywhere!
Yup only for the switch, no other console
Definitely this, It can be played at any level and contains tons of popular characters. If this 8 year old likes Pikachu, sonic, Mario, Kirby, pac man, etc, this is a great game, the online mode is complicated for someone of that age, but that is not required to make the game fun. Arms can get pretty boring, has unrecognizable characters, can be a tad confusing, and lacks a significant amount of content, I hope this helped.
No, the WIimotes don't work anymore. Other than the Gamecube controllers, Joy-cons and the Pro-Controller work.
You unlock the characters as you play, it takes a while, but it’s definitely rewarding as some of these characters are very good!
You can play up to 8 players locally.
Let go pikachu lets you kill pikachu and lets go evee lets you kill evee.
It's compatible and you can still play with others using the online features.
I don’t believe so, but you can get cash for trading in your games.