FIFA 13 has sold through over 12 million units, outperforming FIFA 12. FIFA 13 outsold Call of Duty in Europe last year.
FIFA 13 is the highest grossing game in the series, followed by FIFA 12.
All online services, including multiplayer, will be down across all games for about two hours.
EA and 39 Studios' RPG the first new IP RPG to take the top spot since Pokemon in 2000.
Bookmakers have made Activision's Call of Duty: Modern Warfare 3 the overwhelming odds-on favourite to claim Christmas No.1 2011.
GAMEfest, the three day consumer gaming event from leading games retailer GAME, has sold out for Saturday September 17, but tickets remain for the Friday and Sunday.
Gamers across the UK will have the chance to play some of EA's biggest titles this September as the publisher teams up with gamerbase on a nationwide tour.
EA Sports will be offering Chelsea FC fans a host of gaming opportunities throughout the 2011/2012 season, beginning on September 30 with a custom Chelsea FC cover for FIFA 12.