Oslo: Two video games used by far-right extremist Anders Behring Breivik in planning his July 22 killing spree have been withdrawn from a number of stores across Norway, one co-op chain said on Tuesday.

Coop Norge, one of the country's major grocery store chains and its main co-op, said it took the decision "out of respect" for the families of the 77 people slain in the twin attacks.

The move was launched on July 24 "to spare people who, in one way or another, were affected by the terrorist acts," the chain's director for non-food items Geir Inge Stokke said.

"We don't want them to stumble upon violent video games while buying milk and bread in our stores," he said.

In a 1,500-page manifesto posted online, Behring Breivik said he was a fan of "World of Warcraft" and "Call of Duty - Modern Warfare" and that he had played the games while preparing his rampage.

Coop told its locations which carried video games -- 50 of 900 stores -- to remove about 50 products from its aisles, including the games cited by Behring Breivik.

Norwegian media reported Platekompaniet, one of the country's leading movie-, video game- and music-selling chains had also pulled some games from its stores. The company did not respond to AFP's request for comment.

Some Norwegian gamers blasted the move.

"This type of logic is problematic when we think of the number of people who play these games without committing crimes or assaults," gamer Audun Rodem said in a July 29 post on his blog.