Breath of the Wild is the game I pick. Mario World is 2nd though.

Breath of the Wild, without a doubt.

Super Mario Bros was a turning point for basically the entire industry, it, along with the NES, ushered in so many standards at the same time and those changes persisted for many generations.

The D-Pad, in-game screens that scroll, Hardware manufacturers actually doing some curation, licensing standards, RCA video/audio out, etc. and new genres, local co-op, and game save files started showing up within just a year or two, so a lot of change spurred very quickly at that pivotal moment in gaming history. (And this greatly changed the public image of home console gaming in the US, which was in dire straits with retailers being hesitant to carry any newer consoles)

Mario 64 was also big for figuring out 3D game navigation, but the foundation of gaming was pretty solid by the time N64 came out, and 2D games after the N64 didn't depend on Mario 64's innovations to still be great games, where as the D-Pad and scrolling screens is still a big part of modern 2D games.

Breath of the Wild is an excellent game, but it is more a refinement of open world games than a whole new thing.

Personally, I would go with Wii Sports though, just because it was cool to play a game with my dad and sister for once, and the good times we had together is something special.

:P

I might get Carcassone, Go Vacation, or something of the like, on Nintendo Switch and see if I can convince them to try another game with me.

:)

You forgot Luigi's Mansion for Gamecube. I know no one would pick it as best ever launch game, but it was a pretty good game and the best of the Gamecube's launch games.

The real launch title for Wii obviously was Wii Sports.

Nintendo is the king of launch-titles and the leading one is often one of the best games the system will ever have. I think there’s only two contenders though; Mario 64 and Breath of the Wild, which actually gives Mario 64 a good run for it’s money. I’d still say Mario 64 though.

Super obvious 64

In modern age Zelda Breath of the Wild offcourse, it had great effect on Switch succes.

Breath of the Wild was a game so spectacular that during a period where it was the sole reason to buy a Switch, the system sold like hotcacks. That said, BotW takes it easily.

Mario 64 comes in at a close second however.

Breath of the Wild for me, because I wasn't an infant when it was released and could actually enjoy it the day it released. Mario 64 is indeed revolutionary, but Breath of the Wild is a game I will never forget. It was the first time I'd bought my own console and games with my own money and the game itself is just so well made. I guess it's cheating because the game is really a Wii U game, but still.