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People were initially skeptical about the touchscreen controls and having to keep an eye on two screens at the same time, but great titles like Metroid Prime Hunters and Super Mario 64 DS put those worries to rest.
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For the longest time, they had a chain of extremely popular gaming devices from the original Game Boy, to its Color upgrade, to the Game Boy Advance and the Nintendo DS, which is still the best selling handheld game console to date.
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Handheld gaming may be the domain of smartphone apps now, but even ten years ago, Nintendo was still king of that particular market.
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