AC/DC's "Black Ice" is flying off the shelves at Wal-Mart and Sam's Club, the exclusive U.S. retailers for the album that arrived yesterday (Oct. 21). Sources estimate the set sold 193,000 copies in its first day of sale, and could move upward of 800,000 in its first week.

This week, Wal-Mart set up "pop-up" stores in New York and Los Angeles to sell the album and offer fans the chance to play the AC/DC-branded version of the videogame "Rock Band."

"Black Ice" (Columbia) is AC/DC's first new studio album in eight years. The group begins an extensive world tour Oct. 28 in Wilkes-Barre, Pa.