The PS Vita was supposed to take forward the success of the PSP, but due to the rise of mobile gaming portable consoles were on the decline.
8
YouTube/PlayStation
Sega Nomad
The Sega Nomad tried to do what the Nintendo Switch would do years later. But back in the 90s, the technology just wasn't there yet to support the dual nature of the console.
7
Ouya
This console was meant to take over the console market due to it having Android architecture. Instead due to the lack of quality games it was a big failure.
6
APPLE PIPPIN
The Apple Pippin was Apple's attempt to enter the video game market, but it failed due to its incredibly high price.
5
Virtual Boy
One of the rare Nintendo failures came in the form of trying to push VR way too early. The Virtual Boy with its awful reddish display gave the user a headache.
4
Atari Lynx
Released along the same time as the Gameboy, the Atari Lynx was better, but Atari did not market it well, and therefore, it led to the portable console's demise.
3
Wii u
Wii U was a disaster by Nintendo's standards. The console lacked quality games and in the modern era, that's usually enough for your console to fail.
2
YouTube/Nintendo
Sega Dreamcast
Sony, Microsoft and Nintendo did everything to shut down any potential success that the Dreamcast could ever have. It remains the gaming industry's biggest "What If..".