In 2004, Interplay closed Black Isle Studios, and continued to produce Fallout: Brotherhood of Steel, an action game with role-playing elements for the PlayStation 2 and Xbox, without Black Isle Studios.
There are engines like Chrystal Space for 3D first person action games and adventures or those for creating role playing games (RPGs). As you can see there is no standard library/API/toolkit as directX is under Windows.
These products include action figures, novels, comics, manga, board games, pen-and-paper role-playing games, apparel, and the World of Warcraft Trading Card Game, which is a bestseller in its category.