Check out Crawl. Roguelike that doubles as a fun party game over Steam Remote Play or Parsec.
3 players have spawn points in the rooms to spawn as dungeon monsters, and 1 player is the hero. If you kill the hero, you get to respawn as the hero and that player becomes a monster. You get to level up both your hero and monsters, your goal is to beat the final boss as the hero.
The family plan has me sold too. Sharing login credentials including 2FA with my wife for things like our utility bills and streaming logins is extremely handy, and for other things like investment accounts set up for our son just feels necessary. I use the share feature a lot outside the family too. I'll share my Paramount login with my friend, but the password is 20 random characters, so I send a link to my saved login and he can copy the user and password.