“ I have so many answers for this... will restrict myself to 10
1 - Babylon 5
2 - Star Wars
3 - Star Gate (SG1 - I just couldn't with Atlantis)
4 - Warhammer 40k universe
5 - Dune
6 - Red Dwarf
7 - Fallout (no one game, just the whole universe)
8 - Dr Who (Doctors 1 - 7) ”
“ On Xbox you play with fellow Xbox players only whereas on PC you can play with PC players regardless of Steam or Micrsoft store - so no cross play.
However, if you have an Xbox Ultimate pass, you should be able to login to PC and install Fallout76 .. but you will be starting fresh I think? Not... ”