In this photo provided by Nintendo of America, teen actor Dylan Sprouse plays the Nintendo DS on the set of an upcoming commercial for the games. The games have sold 2.7 million units combined in the United States.

In this photo provided by Nintendo of America, teen actors Dylan and Cole Sprouse take a break during filming of a commercial for the Pokemon HeartGold Version and Pokemon SoulSilver Version games for Nintendo DS, which come with the Pokewalker accessory, a special pedometer-like device that lets players take their favorite Pokemon with them wherever they go. The combined games have sold 2.7 million units in the United States. (From left to right: Dylan Sprouse, Cole Sprouse)