I would say 8th gen. because I dont see the switch as a succesor of the wii u, but as a consolidation of the current handheld and home console nintendo where offering.

To elaborate, I say games define a generation or what games are capable during that generation. The capability's of the switch are pretty much the same as wii u so the games are very similar. The same as why the x1 and x1x are the same gen even though one is 4x the capabilities, the games are the same and neither does anything the other cant, just higher resolution.

Now the switch was barely getting some very few if any games the ps4/x1 where getting, I would assume its not gona get any game at all that comes from here onwards as its no longer a resolution issue anymore. It will be limited by things like ssd, raytracing and what ever does differentiate the gens.

Along with "is Switch a console or a handheld" this is one of the most pointless and overdone arguments on VGChartz, and the gaming forum sphere in general.

They are totally separate.

Their internal architecture is nothing alike. Switch is significantly more capable. Many Wii U games and not on Switch and thousands of Switch games are not on Wii U. One is a home console with a screen in the controller, the other is a mobile device where all the processing hardware is housed in a handheld form factor. 

Conflating the two is like saying the PS2 and Vita are the same.

They're not.

Switch is significantly more capable than Wii U. The latter couldn't handle ports of games like Witcher 3 or Doom Eternal.

Are the "classic retro nostalgia mini consoles" considered part of original gen and added to sales of that platform?

shit changes all the time, so the definition of a console generation is not properly defined and therefore malleable.

That said, NES was Gen 3, SNES was Gen 4, N64 was Gen 5, Gamecube was Gen 6, Wii was Gen 7, and WiiU was Gen 8. Switch, PS5, and Xbox One are all currently on the market as Gen 9. At least that's how I see it and how my game database categorizes it. We'll reconvene when the next Nintendo console/platform releases. Until then, Switch is Gen 9 in my eyes.

The home page doesn't really call it 9th at all. It's current.

Switch is pretty hard to peg. As a handheld, it's Gen IX. It's so far beyond the capabilities of either the 3DS or Vita. But as a console, it seems more like yet another eighth-gen piece of Nintendo hardware. I personally call it 9th, but it's tough.

People keep saying this. Like the Sega Nomad never existed.  The thing was a portable, it played the exact same games as a home console with no compromise, it connected to a TV, it allowed for a second player. It did everything the Switch does except it did it decades earlier.

And would you consider the Switch Lite a hybrid?

Would you consider the PSTV (PS Vita that only works on a TV) a console?

Where's the line?

Nintendo consoles are on a weird scale. They always last about five years before there's a successor. The Xbox and Playstation consoles (especially after the 7th gen) last a bit longer. The only reason the Wii U kinda lined up with everyone else is because the Wii came out a year after the Xbox 360 and its successor came earlier but still only a year before. The Wii U fizzled out rather quickly but still within Nintendo's usual time frame. The PS4 and Xbox One arrived later and lasted much longer. Now we have a 2017 console that will probably have a successor in the next couple of years, living life amongst consoles that are fresh out of the gate and will be around for another seven or so years.

There's a good possibility that the next Switch will be ending its life right when the PS5 and XS are ending their lives. When that happens, what do we call it? We have an 8th gen Nintendo console along side 9th gen consoles? Or do we have a 10th gen Nintendo Console along side 9th gen consoles? AND the 3DS was clearly an 8th gen console. Is the Switch a successor to that? Is it a 9th gen portable/8th gen home console? I'm giving myself a headache.

One thing's for sure: 9th gen (aside from the Switch--if you consider it a 9th gen console) has been extremely boring thus far. It's hard to have an interesting conversation about the PS5 and XS at this point in time.

Why are you talking about power ? I am speaking about library.

You can't read the part where I said 1st generation Nintendo console/system?

Switch is much more capable than a Wii U hardware-wise. Docked it's closer to Xbox One but still a ways away. Undocked raw power it's comparable to Wii U but still more capable. More modern chipset. Wii U used a GPU from 2008 and a  modified CPU from 2000.Switch uses hardware more modern than Xbox One or PS4.  Switch supports a lot of features Wii U could not do. Switch does not use Nintendo's craptastic API GX. It uses Nvidia NVN which supports OpenGL/Vulkan. Why else do you think modern engines like UE4/5 support it?

I'm not one to say power is the sole deciding factor on generation. Only point of this post is to point out Switch is not only a fair bit more powerful than Wii U but much more modern and offers features Wii U was incapable of power aside.