There's an audience for everyone. Sure there's apps that can do this on smartphones. Then again, there's children whom this may appeal to...or their parents for a video game console. If there's an advance mode for adults alike who loves the mental challenge, then I'd say they will hit their target audience. I'm sure Nintendo doesn't expect this to sell like their flagship franchises, but still off variety.

Yeah I'm sure some kind of Switch Sports title must be in the pipeline, it's the logical next step in their current trajectory with games like Fitness Boxing, Brain Training, and Ring Fit Adventure, games that attempt to emulate the kind of software that sold the Wii and DS. Hopefully it's more in line with Ring Fit Adventure and less like 1-2 Shit.

Fuck it. Nintendo might as well try. Brain Age on the Switch cannot be that much of a risk.

Exactly, something like this would take up so little resources that even lukewarm sales would likely turn a profit.

People loved Guitar Hero too .... 12 years ago.

Fads generally don't come back after 12 years.

Do you ever think that Nintendo releases these games because their developers like making them, rather than chasing a supposed fad? Like these games must do well enough for Nintendo to keep letting the teams make them.

In order to ensure Switch had a killer first year and didn't suffer the Wii U's fate of launching into a protracted drought, Nintendo opened fire with almost all their big first party teams (Zelda team, 3D Mario team, Mario Kart team, Splatoon team, Monolith Soft) in 2017.

The cost of this is that since big games these days take 3 years or more to make, those teams couldn't have another game ready for 2018 or this year. Next year however, is when we should see these teams start to release their second generation Switch games.

You can also get Fire Emblem, Mario Kart, Pokemon, Mario Bros, and countless knock offs of those games, as well as shooters, fighters, sports, and pretty much whatever else you want on a phone for 0 dollars.  That really hasn't stopped those things from succeeding on consoles.  If it's a good product that's marketed well, it'll do fine.  

Fixed that since you seemed to be making a very broad conclusion based on one data point.

Also remember, that many of Nintendo's other developers we're still on 3DS games too, so that Complicated the situation. 3DS is done now, so Nintendo has more resources to work with for Switch ganes

I actually enjoyed Big Brain Academy on Switch more than Brain Age and feel like that'd be a better fit on the Switch, but still might get it as I assume it'll be fairly cheap and come bundled w/ a stylus (which will also be useful for Terraria Switch)