Every package downloaded for the load under way, in the order they became known - for one bar across all of them, rather than Sandbox.LoadingScreen.Progress's one download at a time. Packages known in advance (a server's, the game and its map) are added with their sizes before anything starts downloading; anything found later is added as it starts. Cleared when the loading screen's shown or hidden.

A URL or filepath to show as the background image.

The game being loaded, once it's been looked up - so the loading screen can show its name, its art and what's new in it. Null before then, and when what's loading isn't a game. Cleared when the loading screen is hidden.

A snapshot of the current download's progress, or null when progress is unavailable. Cleared when the loading screen is hidden.

A subtitle to show

A list of tasks that are currently being awaited during loading.

A title to show