Call of Duty: Modern Warfare 3, reports MCV. The ASA took exception to the copious gunfire, explosions and the depiction of "New York under military assault" – you know, Call of Duty stuff. The ad originally aired in November during an afternoon soccer match and, although Activision followed the advertising guidelines it had been given at the time, the ASA has decided that the commercial "could cause distress to some children who might see the ad." As such, the ad can no longer be show prior to 7:30pm.
It's a shame, really. Activision needs all the help it can get spreading the word about Call of Duty.