When run on a Nintendo DSi or Nintendo 3DS, Action Replay DSi's icon and title will be listed as Game & Watch Collection. This is a way of working around the DSi's bootleg game protection, which is done by having a built-in whitelist of every official DS game, which Action Replay circumvents by tricking the device into thinking Game & Watch Collection is being played. Action Replay DSi contains almost every byte of data from Game & Watch Collection, but jumbled into an unplayable format.