Either automatically updates itself to latest version or informs the player of availability of newer version and where to get it or requires manually running separate update tool/check that comes with the game, without having to use third-party updater.
Alternate name: Auto-update
The first video game about Self-update was released in 1998.
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.