- Metal Gear Solid 2
- Not Applicable ()
Metal Gear Solid 2 was the first stealth game to feature guards who could operate as a team and even communicate with other guards off-screen to organize a counter-attack. Disabling them before they could call for help was a major part of the gameplay, and this level of Artificial Intelligence has since become integral to the stealth sub-genre as a whole. GWR Video Gamer's Edition 2008, title: First collective AI in a stealth game.