I have three:

-Gamecube: How could a console that had the best version of Soul Caliber II, Metroid Prime, Wind Waker, Resident Evil 4, Mario Sunshine, Pikmin, Smash Bros. Melee, Super Monkey Ball, Resident Evil Remake, Viewtiful Joe, Baten Katos, Paper Mario: TYD, and so many others sell so poorly? It has never made sense to me!

-Atari Lynx: Considering that this came out the same year as the monochrome Game Boy, this handheld is ridiculously impressive! It had Mode-7 style scaling before SNES was even launched, and even though most of the exclusives were lackluster (Dirty Larry notwithstanding), it had some really great/faithful arcade ports with Double Dragon, Ms. Pac Man, APB, Toki, Pit Fighter, etc. One thing that killed it, though, was it's appetite for batteries!

-Dreamcast: I could sit and talk for hours about this console, and the many theories as to why it failed. It had all of the ingredients for success: an attractive design, third party support, an incredible launch in the states (Soul Caliber, Sonic Adventure, Powerstone, NFL2K, etc.), and Sega putting some serious marketing muscle behind it. It was never going to dethrone Sony, but Sega could have come in third, or even second place!

playstation 3

it got criticized and bashed and mocked so long yet it outsold the xbox 360 and had elite console exclusives and many amazing multiplatform games that even if they were not always native 720p or 30fps still was a sign of SONY working hard behind the scenes to convince dev companies to work with the complicated ps3 structure. It also played blu ray movies in a time were a player would cost 300 easy, it stored music and let you burn CDs, it could let you watch many video formats from a flash drive, it had free online play, they gave free stuff when there were hacks, the wireless charging controllers were awesome, and many of the games were split screen multiplayer while the ps4 and xbox barely has any compared to previous gens

Going by the so-called 'hardcore' crowd the Wii. You'd think it had nothing but but Wii Sports clones and fizzled out by 2008 going by the complaints against it, when it had games like Galaxy, the Zeldas, Xenoblade, Red Steel 2, the Prime trilogy, Muramasa, and so many more. Going by the mass market probably the N64. With such revolutionary games as Mario 64, OOT, and Goldeneye that pushed the entire industry forward you'd think it would sell much better than it did.

Factoring in both hardcore and mass market, probably the Master system. On a purely technical level it was better than the Nes and easily had the best library of any of the Nes' competition, but it couldn't break through.

I think the Wii U is more misunderstood than underrated. Those who got one, and even many hardcore gamers who didn't, know that the library is very good and the cool things the gamepad could do. But outside of those circles there is still a lot of confusion as to what the Wii U is in the first place.

Wii U.

Not only did it have some amazing games, but you could play most of it in handheld mode. Which made it the best home console, until the Switch came out.

A few reasons:

- It's look, particularly the controller, gave people the vibe of a Fisher price toy, giving it a reputation as "PS2 for kids", and no kid wants something "for kids", they want the "cool" system that the grownups have, hence they ask their parents for a PS2 instead.

- Games like Sunshine and Wind Waker also came across as catering too hard to small children, and failed to live up to what a lot of Nintendo fans wanted coming after the likes of the epic Mario 64 and Ocarina of Time.

- PS2 had a head start and as a result by the time Gamecube came out its rival had gathered too much momentum and become the default system of choice, hence sucking the wind out of GC's sales. (heh)

- It lacked DVD playback at a time when this was a hot feature.

- Games like Viewtiful Joe and Baiten Katos were niche, while GC lacked a lot of mainstream heavy hitters like GTA.

All very good, perfectly valid reasons. I remember that, during that specific era, the "Nintendo is for kids" mantra was on full display. Even Kaz Hirai was saying it in interviews! Once Wii arrived, it changed from "Nintendo is for kids" to "Nintendo is for casuals." I, personally, never saw it but you are totally right: it did have gaping holes in the library, especially after taking into account how deep the PS2 library was.

I always thought that the lack of any sort of multi-media functionality was a mistake, on their part, as well. I also remember thinking that Sony making PS2 backwards compatible was a brilliant idea, and that they would likely be the only hardware manufacturer to do so.

Out of the four consoles-Dreamcast, PS2, Gamecube, and Xbox-I found the Gamecube controller to be the most comfortable, for some reason.

I'd say the Vita. It feels like the console with the most untapped potential of any other console.

Turbograpx 16 is severely underrated. I would have said Ps vita too but the first party library leaves a lot to be desired. The gamecube and dreamcast are also very underrated since they have produced some of the best games of that gen.

I was going to joke Turbografx 16, but you beat me to mentioning it. I never played the system, but my older sister always sung its praises.

OT, I gotta give it to the Gamecube. Sure, it has a lot of love now, but that is more akin to a cult following. The love over time is not really descriptive of how lackluster it performed in its own generation. Yet it had some of the greatest games of its time. The library wasn't as deep as PS2's (I owned a PS2 as well so I can't deny how many good games it had), but GCN's best were better than PS2's and XBOX (owned that too, and Halo 2 was a personal favorite that I probably played more than any other game that gen).

Short story is that generation of gaming was masterful.

Probably the Gamecube, even for all its mistakes, it had the best Mario kart and F-Zero it was also home to smash bros melee, windwaker, super mario sunshine, luigi's mansion metroid prime. So it deserved more sales and recognition than it got. The original Xbox also got way too less praise and sales.