No Single or Multiplayer games are added to a playroom by default.
Adding a Game to a New Playroom
Go to the PlaySpace
On the "Playrooms" card, click on "Manage"
Select the Playroom you want to update
To add a Singleplayer or Multiplayer game to this playroom,
Go to the "Manage room activities" section
Click on the "Edit" button next to "Single Player" or "Multi Player"
Click on the toggle at the bottom of the game to enable or disable it
When a game says "Enabled", it is available to use in the playroom
When a game says "Disabled", it will not be shown in the playroom