i think i did say this once but. to quote kaoru seta. good things can be said many a time. and also i will probably have different answers this time because my brain operates on a train line

-mario kart is a super easy one because its totally the kind of casual chicanery she'd suggest (after mario party got banned). she inevitably asks everyone to let her be in the lead and gets into 1-on-1s with taki that put them both further back. i would also say she asks soyo if they can put their karts together but im not cruel enough to have her make a gamer joke. i think she'd react in horror if you called her a gamer
-taki's favorite videogame is You Know What
-tomori is an ENORMOUS pokemon mystery dungeon + explorers fan. and also likes pokemon in general. they are all her friends. she likes completing pokedexes in each game she plays but also makes sure to name all the pokemon she catches and organize them within PC boxes in neat little arrangements so that they're all memorable to her bc she doesnt wanna forget them. rotom mimikyu grubbin and lunala are her favorites.
-taki's favorite pokemon is mightyena btw. you didnt ask but im saying it. i dont think it's pangoro bc pangoro doesnt represent what taki likes about pandas imo. also she tries to have the same gens (counterpart games specifically) as tomori does so she can be a trade partner whenever tomori needs it
-we KNOW that soyo spends a lot of time on her phone so she's probably milled through like 10 different popular games on there she doesnt really care for. she's absolutely whiled away some time in 2048 before. also i think it'd be funny if she found a really violent game cathartic to play and played it with a polite lil smile on her face that scares the shit out of everyone