A fork of Rural Dictionary
Term used by videogame fans mainly to refer to the developers who are not owned by a 1st party and usually operate autonomously, such as Capcom or Electronic Arts, and by association the games they make.
Namco is a 3rd party.
Term used by videogame fans mainly to refer to the manufacturers of a gaming console, such as Microsoft, Sony, and Nintendo, and by association the games they make.
Super Mario Sunshine is a 1st party title from Nintendo.