Self-update

See also: self report

Occasionally there's no separate update check button but still requires some user action, such as entering a multiplayer lobby.

These commonly become dysfunctional some time after the end of the game's perceived lifetime or projected service time, ranging from a month to year or two.

MMOs have this by default, AFAIK, so they don't need to be tagged.

Not for games published on a service that automatically updates all games in it (such as Valve's Steam). The update functionality is not part of the game itself then.