There are too many foos ball tables and too many arcade machines.
Card games or board games for at least 4 sims would be cool. The domino from Showtime looks interesting, but I don't care enough to buy that expansion. The Sims 2 had card games and even pick-up sticks:
https://i.imgur.com/5ehgfTP.jpg
https://i.imgur.com/lXhxFR5.jpg
And The Sims 1 had this party game (I forgot the name) for big groups of sims.
https://i.imgur.com/pO858PE.jpg
I like activities for various sims, but usually I have to resort to hot tubs instead of games.