The A.V. Club writes: "We keep coming back to videogames for the same reasons we always have. Or do we? Games in 2009 look considerably different now than they did in 2000, and not just because the graphics have improved. What was once a lonely pursuit has gotten social, whether by way of a party-friendly round of Rock Band or a late-night online session of Modern Warfare. The thrills have gotten more complicated, too. Even the shoot-'em-ups aren't just about shooting 'em up anymore. (Or at least not shooting 'em up without some careful planning.) As the '00s close, The A.V. Club offers our picks for the 15 games that pushed things forward."