War Thunder is one of the most comprehensive ... So you can play with up to 32 other players, making it one of the best free Steam games if you want to spend some quality time with loved ones.
I have good news though, because the Heroic Launcher allows you to link all three of these accounts to your Steam Deck in desktop mode, making it a breeze to open games in these launchers.
Since 2020, Steam has been running regular festival weeks where hundreds of upcoming games offer free demos for you to ... the chance to rave about Total War or Crusader Kings.