sales of Civilization IV surpassed 3 million units by March 2008. Critical reviewsCivilization IV received universal critical acclaim with an aggregate score of 94 on Metacritic and an aggregate score of 93.36% on GameRankings. Critics such as GameSpot's Andrew Park praised not only the improvements in the turn-based strategy genre that carried over from other installments in the series, but also noted the game's more advanced 3D computer graphics, difficult AI opponents, and multiplayer feature. The Times praised the improvements of the 3D engine used to generally build the game, and GameGuru appreciated its ability to zoom onto individual squares. IGN commented that the game AI was much more intelligent than it was in Civilization III, which designer Soren Johnson stated was thanks to their "secret pre-beta group" testing the game before release. Game Revolution remarked that "the multiplayer... actually works this time" and GameSpot added that both "single-player and multiplayer options have been improved in Civ IV." Though it had received mostly positive feedback, video game critics pointed out functions in the game which could have been improved to enhance their enjoyment of the game. Steve Butts from IGN suggested that in-game announcements about enemy achievements should be displayed more prominently, and that the multiplayer feature could have included "an option to save my username and password." Likewise, GameSpy's Dave Kosak pointed out other flaws of the multiplayer interface, stating that it "is a little rough in places. The built-in server browser, for instance, will keep jumping around the list as you try to find a game." GameSpot also noted the lack of a "religion-based victory condition", which downplayed the influence that the revamped religion system was supposed to have on the game. In August 2016, Civilization IV placed 11th on Time's The 50 Best Video Games of All Time list. Awards Civilization IV won multiple awards at various events and gaming websites. IGN chose it as the PC Game of the Year of 2005 over competing titles such as F.E.A.R. and Guild Wars, as the Best Strategy Game (both for PC and overall) and as the Best Online Game of 2005 for PC. In 2006, IGN ranked it first place on The Editor's Top 10 list and second place on the Top 25 PC Games of All Time list. GameSpot awarded the game Best Strategy Game and Best PC Game, and it was nominated as an entry for