This article is part of PS2 Week, a full week celebrating the 2000 PlayStation 2 console. To see other articles, go here.  /// Up until Grand Theft Auto III (2001), it was standard to classify videogames by their central mechanics. There were stealth games, platformers, shooters, racing games, action-RPGs, turn-based RPGs, fighters, puzzle games, action-adventure games—and the expectation was that every game would feature a whole range of genre-informing actions and rules, typically interspersed with sections devoted to “story.” The problem is that this naming structure was a presupposition in itself: what if you wanted to do all of these things…