PS Vita. It had so much promise, but the games weren’t really there and Sony kinda just forgot about it. I remember it was the first time you could stream a PS4 game to a handheld, which was novel at the time. But it never felt “good enough” and most games didn’t support it or were too finicky. If I look at my Steam Deck now, I think that’s more or less what Sony had in mind for the Vita as well