Nintendogs
You pet the puppy with the stylus, you called its name into the microphone, and it learned to sit — Nintendogs made grown adults coo at a plastic clamshell on the bus. The virtual puppy that sold the Nintendo DS to everyone's mom ended up one of the best-selling games ever made.
Nintendogs began, according to Nintendo lore that happens to be true, with Shigeru Miyamoto's family getting a dog. Developed by Nintendo EAD under producer Hideki Konno, the game was built to show off everything strange about the Nintendo DS: you groomed and petted your puppy through the touchscreen, taught it tricks and called it by name through the microphone, and let it meet other players' dogs through the wireless "Bark Mode." It launched in Japan on April 21, 2005, and hit North America on August 22, 2005, in three simultaneous versions — Dachshund & Friends, Lab & Friends, and Chihuahua & Friends — a pick-your-starter setup borrowed straight from the pet store window.
There was no way to win Nintendogs, and that was the point. It was a tamagotchi with production values: your dachshund tilted its head when you spoke, chased frisbees in the park, and greeted you at the screen every time you opened the lid. The effect on the DS's audience was immediate and transformative — this was the game that put the console in the hands of people who had never bought a video game, the mom-and-younger-sibling system-seller that previewed exactly what Wii Sports and Brain Age would do to the living room a year later. The puppies even shared shelf space with real pet accessories; the marketing wrote itself.
All versions combined went on to sell 23.96 million copies, making Nintendogs the second best-selling Nintendo DS game ever, behind only New Super Mario Bros. A 3DS sequel, Nintendogs + Cats, followed in 2011. But the 2005 original is the one people remember with their hands — the specific muscle memory of rubbing a stylus in circles on a screen while a beagle leaned into it.
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Nintendo DS
The clamshell handheld that split gaming in two — literally. Nintendo's dual-screen DS added a touch-sensitive bottom screen and stylus, backward compatibility with Game Boy Advance cartridges, and era-defining hits like Nintendogs, Brain Age, and Mario Kart DS that proved touch controls weren't a gimmick.
Tamagotchi
The egg-shaped digital pet that lived on a keychain and died if you ignored it during math class. Bandai's Tamagotchi demanded constant feeding, cleaning, and attention, sparking a global craze — and a wave of school bans.
Wii Fit
Nintendo released a scale that played minigames, and somehow convinced the whole family to step on it every morning as entertainment. Yoga in the living room, soccer-ball heading by leaning, and a daily Body Test with opinions about your BMI — the fitness moment of 2008, long before the home-workout industrial complex.
Brain Age
The game that put a Nintendo DS in your mom's hands. You held the DS like a book, scribbled math answers with the stylus, and a floating polygonal professor told you your brain was 47 years old — so you came back tomorrow, and so did every parent and grandparent in America.