Democratic State Senator Leland Yee says the justices' written opinions suggest some of them might be open to a narrower ban.
Meantime, video game retailers say they're vindicated by the ruling. Sean Bersell with the Entertainment Merchants Association calls Yee's measure "patently unconstitutional."
Bersell: "The strong majority of justices agreed that video games are protected by the first amendment and they should be treated just like any other entertainment products - like movies and music and the like."
Bersell says the industry has shown it can regulate itself by rating video games and requiring retailers to enforce those ratings.