If it's like my other consoles from 20 years ago, It'll be sealed in a box in the attic while you emulate it without a thought.

Not going to comment on the software ecosystems because that is pure speculation and anyone claiming otherwise is talking out of their ass.

What I will instead point out is: your hardware is likely to fail in that time period. "Planned obsolesce" or whatever, I don't care how you justify it. The reality is that these contain batteries that will degrade, and eventually fail. That is why anyone with a PSP or a Vita should check if it is bulging and dispose of it accordingly. And I think it is the xbox 360 that has a capacitor that people should cut before it leaks? Or basically any PC from 20 or so years ago where you need to repair the system clock on the mobo.

Hell, people love to talk about how unbreakable and amazing the NES is. Except... just look at GDQ where they have had multiple (?) instances of consoles failing during runs and the runners even talk about needing to source functioning consoles and scrap them for parts. This is why the speed running community went from gatekeeping "Rawr, only original hardware" to "So... those FPGAs are fucking cool, right?"

Much like with PC gaming: having the hardware or even the license does not mean you can play it in ten years without jumping through some hoops that often involve emulation and/or cracks.

There are games like "Control" that are guaranteed to be dead in 5 years max as they're glorified remote play solutions. The game is playing on someone else's computer and streamed to the switch. So the bill for that computer is paid by new sales like a Ponzi scheme. No more sales = the dev turns off their servers = no more playing

Even with the best care I wouldn't expect it to last 20 years. The switch is nowhere near a well built machine as the DS was. The controllers will be lucky to last a year. They used arbitration to avoid a lawsuit over how crappy the switch is knowingly built. We've been through three since their inception. That being said they're still a lot of fun. They are trying to integrate the sub more, but it's still avoidable on some games. If you buy one get a hard case or at least a somewhat solid case to help support the console with the controllers connected if you decide to play it that way. The way that they're connected with what destroyed them faster for us because you put too much pressure on the controllers and their connection when holding it. Using a case like this for reinforce the controllers and make them last much longer in my experience.

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There are fitgirl repacks for most switch games. Emulators and all bundled.

If you don't count multiplayer and buy only physical copies of your game, you will be able to play for as long the hardware will function. You can also hack your switch and keep a copy of every game you may need somewhere in an hard-drive too.

What i find to be cool about the switch is that you can still buy hardware game cardridges. I don‘t see a reason why these cardridges wouldn‘t work in 20 years anymore. I also never had issues playing the games offline.

Yes, your wife and your kids will be able to have seperate game progressions. I think you are able to create up to 8 of these „profiles“.

Since the problem of the joycons breaking down has come up a few times, I just want to mention that you can easily couple 8bit-do controllers, or presumably any others, and play with those instead. That's likely to mean they'll be available for a while. Not sure that you can do anything about a DS's buttons breaking

would you remove the battery during those 20 years?

I already did some searching and found that games can be played offline fine (most of them, some exceptions are there like Multiplayer and Mortal Kombat)

Yes, most games will work offline just fine even with a multiplayer mode. (You just won't be able to access multiplayer.) I believe you can still play Mortal Kombat 11 offline but it locks you out of a lot of content IIRC.

There is something like the paid Nintendo Online Account. I am not planning on having a paid account. How much of the system depends on the account?

The account creation is completely free. You can even make a local account but you won't be able to play games online or use the eshop without making a Nintendo account. The only thing you "need" to pay for is a $20 annual Nintendo Switch Online subscription to play your games online. (Note that all games don't require the Nintendo Switch Online subscription, but most do. This includes all of Nintendo's first party IP's.)

Can I have progression in a game (let’s say: one of the Zelda franchise) and will my Wife and Kids all have their own progression, without having to pay for X accounts?

All of your games will have separate saves with different profiles. Note that all of the accounts you make don't need a Nintendo Account, so you can make a Nintendo Account for yourself (which is free) if you want the features it comes with, and local accounts for your wife and kids, and any game they play will have different saves that won't conflict with your saves. The only exception to this that I know of is Animal Crossing New Horizons. You can have different accounts and players on one Switch but you are limited to only one island per console.

People who own a Switch, let’s take this to extremes, do you feel like in 20 years from now you can still do the same things on your hardware as you can do now? (No multiplayer is fine)

Personally, I'm not sure how long the Switch's hardware will last. If the durability and longevity of Nintendo's other consoles are anything to go by, I'd say it has a fair shot of lasting a while; with the exception of maybe a battery replacement and/or new thermal paste. I have both the OG model and an OLED model, and I can say for certain that the OLED model runs cooler and quieter than my OG model. Even if the Switch's hardware fails I will always have my games and saves backed up on my PC so I can always play my games through an emulator on more powerful hardware.

Edit: I completely forgot to mention joycons. I think these will be the first things that get replaced with any amount of long-term use. I've already gone through 4 pairs on my OG switch because of joycon drift. My OLED is holding up fine though (thankfully), but I think the cheaper option would be to just replace the joycon's thumb-sticks with hall-sense sticks, and they should (in theory) last quite a bit longer.

For future reference, consider !buyitforlife@slrpnk.net

Get a Switch, get it right now, also get this tool. The answer currently is yes, as long as the hardware still works & the battery doesn't explode, and a switch combined with the MIG tool will give you a robust local library of games. Get your rig + MIG & never connect that switch to the internet ever again.

Nintendo is notoriously litigious & overly protective of all things Nintendo. The MIG Switch cartridge looks AMAZING but obviously Nintendo fucking hates it & they will probably try to issue a patch that nerfs it and/or kills your Switch in the future.

I would lean towards either a DS, or switch emulation (using a device such as the Steam Deck, so games that require gyro input such as Super Mario 3D World - can still be played fine)

The DS is really affordable second-hand, and the usual third party SD card carts work just as well. People seem to really like the XL models, so may be worth considering one of those

As for the Switch, you'll likely be able to play your existing physical carts in 20 years time. It's still Nintendo's latest console though, so there's no telling what they may decide to do in future. I think if you have a jailbroken switch you could be in for a difficult time if newer carts use different hardware encryption keys that require a newer firmware...

With emulation though you get to actually own the games and play them on whatever device you want, at any time. The Mii maker and gyro setup does require following some guides to get going, but this stuff is well supported for the Deck (probably similar story for the alternative Windows handhelds but haven't checked). Yuzu's early access Android app already has gyro configured, using the sensors built into your phone. Lastly you can do multiplayer with other Yuzu players over the internet, completely independent of Nintendo's online functionality

People who own a Switch, let’s take this to extremes, do you feel like in 20 years from now you can still do the same things on your hardware as you can do now? (No multiplayer is fine)

No chance.

Not only it is unlikely that the hardware will last that long, the supplies for hardmodding it likely won't either, and in 20 years there won't be enough of a community interest to support hardmodding services unless some sort of master keys are leaked. And without hardmodding, the only Switches that you can install whatever you want on are very ld ones that were released with firmware 3.x or something, which are also less capable hardware and lower quality joycons.

Heck, if I had to bet on 5 years more instead of 20, I'd flat out sell my Switch and buy a Steam Deck 2.0 as soon as they release.