 The legality of this type of devices has been questioned, such as in the case of "Lewis Galoob Toys, Inc. v. Nintendo of America, Inc.", in which Nintendo unsuccessfully sued Lewis Galoob Toys stating that its cheating device, the Game Genie, created derivative works of games and thus violated copyright law.The most basic way of achieving this is by means of memory editor software, which allows the player to directly edit the numeric values in a certain memory address.This kind of software usually includes a feature that allows the player to perform memory searches to aid the user to locate the memory areas where known values (such as the number of lives, score or health level) are located.