A competitive/cooperative online role-playing game (commonly abbreviated CORPG) is an online genre of computer and video games centered around the creation and development of an avatar with the intent of competing with and against others in a global competition or cooperating together in a private instance of the game world. It is considered a sub-category of massively multiplayer on-line role player game.

The term was first coined along-side the creation of Guild Wars, after the developers decided that their game did not fit the broader definition of MMORPG, due to its almost total use of instanced playing areas and focus on player versus player content. The only other game to categorize itself as a CORPG is the upcoming Fury.