drunk.

Mario Odyssey- probably. Zelda- possibly (could go either way, really would need the Switch to do well long term though because I think the attach rate will drop a lot over time).

Splatoon 2? no flipping way. 10 million will never happen. The game is to niche. Popular niche, yes. But kids who are squids? what did the first one sell, like 5 million? I just don't think it can double that, I think a lot of casuals will look at it and find it odd. Bear in mind part of what propelled Splatoon when it launched was the Wii U had droughts AND there was some media/gaming attention around its strange concept which helped build up attention.

Splatoon will not do as well as Mario Odyssey and Zelda.  Not even close. 

can't tell if you're trolling... or just out of your mind...

I think it's the opposite. If anything "Arms" will not set a precedent at all for Splatoon. A) Arms is an even stranger concept than Splatoon. B) Arms is a fighter, shooters are far more popular, and C) Arms doesn't have the best reviews ever (not bad, but not great).

I expect Arms to have a mediocre launch (and this is coming from someone who's bought it). Splatoon 2 will undoubtedly be big, but to expect it to match something like Mario is just asinine 

50 million? is open trolling allowed on this forum? ffs *shakes head*

Not trolling i think the Switch will be huge like we have never seen before.

The only reason I say this serves as some sort of outlier is because of the difference of genres. ARMS is not what I would consider a huge game if it launched 2, heck, even if it launched a 1 1/2 into the Switch's life cycle, but seeing as how this is the first truly new exclusive for Switch that isn't on Wii U and it's about 3 1/2 months into the system's lifespan, I think it may do better than people expect. I think if Arms can sell 1.5-2 million by the end of the month, the holiday season could put it on pace to that 4-6 million figure, seeing as how their isn't a truly huge fighter yet on Switch (unless you cound USF:II, which I don't).

Knowing that, I think Splatoon 2 being a shooter and more well known could easily beat ARMS. I could see it sitting around the same number of sales as ARMS by the end of the year if not more, and seeing how it doesn't have a lot of shooters to compete with, it really is the only one of its kind, further increasing sales.

Sidenote too, I had made an even bolder prediction that to me Odyssey could sell 20 million copies lifetime. I'm assuming Switch sales will fall in between 75-110 million, and Odyssey has this sort of uniqueness to it. It isn't as easy as say 3D World, and yet it isn't as stupidly hard or frustrating as 64 or Sunshine. I think it's a game that appeals to anyone, more so than Galaxy, and I think it will sell gangbusters.

Just my opinion though. I have nothing set in stone.

Only Super Mario Odyssey... Splatoon 2 & Zelda BotW have it difficult!

Splatoon is at 4.88 million on 14 million Wii Us. 

Super Mario 3D World is a bit over 5 million, but it was also on the market for like a 1 1/2 years longer than Splatoon and had the benefit of being more heavily bundled. 

Splatoon 2 is going to be a fucking monster in Japan too, I think you have no idea what's coming. I wouldn't be surprised if it is the single format biggest IP in Japan (yes above DQXI on 3DS and any Final Fantasy and above Monster Hunter, the only one it might not topple is Pokemon). 

Splatoon 2 will top Zelda IMO, pretty easily too. 

Depends on how well the Switch does, but even Odyssey may not hit 10M.. :/

Do they?

What genres would you say Nintendo have monopolies over?

See, I don't think Splatoon is niche at all. Niche games don't sell nearly 5 million on a failed console. Sure, it's a bit odd, but that's part of its appeal. Being odd doesn't preclude popularity; Pokemon is pretty odd if you think about it.