Personally, I'd get a little sad remembering all the times my and my brothers played Mario party, Toy Story, and even when I soloed my way through Ocarina of Time and Majora's Mask. They're a good company, but reusing successful franchises won't help much longer much to my dismay.
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while I would be a bit sad, and I would miss the games like Mario and stuff, chances are other companies will swoop in and snatch that shit up. Nintendo needs to stop focusing everything they have on making their games and also focus on third party games, because that will bring in a lot of revenue. they just keep making a lot of bad business choices, so I wouldn't be too sad.