Nintendo DS (2004)
To follow up the multimillion-selling Game Boy Advance, Nintendo introduced a device with two screens, one of them touch-sensitive. Many skeptics predicted that the extra screen would prove superfluous and that the new device, the Nintendo DS, would flop. But Nintendo has had the last laugh, moving 113.48 million Nintendo DS units worldwide to date. Nintendo replaced its original, bulky DS model with the svelte and compact DS Lite in 2006, and it remains a major breadwinner for Nintendo.