Super Smash Bros Ultimate helps kids practice and improve the following skills:

Working Memory: Recalling and retaining information in our minds while working.

As with most fighting games, Super Smash Bros characters have special combinations and attacks based on the buttons that you press on the controller. Players need to use their working memory to recall what these combinations are while they are in the middle of a fight. Moreover, there are tons of different items that can appear on screen and the player needs to remember what these items do while they are in the middle of battle in order to determine whether they are helpful or something to be avoided at all costs. For players who struggle with working memory, completing training and tutorials before going into the main areas of the game can help build this skill up. 

Focus: Ignoring Distractions 

Super Smash Bros has a lot of chaos occurring on the screen, whether it is due to the elaborate backdrops and interactives of the stages or the number of characters who are battling each other for the number one spot. The player needs to use their focusing skills and block out the unimportant distractions while paying attention to the things that matter most to survive and beat their opponents before the timer runs out. For players who struggle with focus, starting the game in the training mode or setting the story modes to Easy will help with practicing this skill before moving on to harder fights.