Best game you never played.

Too many to make a list, lol

Jump Ultimate Star.

basically a 2d pixel super smash bro but manga/anime.

well, Ive played it at 2007-2008, a long time ago. I didn't watch too many anime, so I didn't recognize a lot. Only naruto, bleach and popular ones.
now knowing more anime, I wanna play it again and appreciate every characters. It was an amazing game only knowing 20% of the characters so im sure it would be a better game now. Oh, and there's over a hundred manga characters to choose from.

I can't play it cuz its in nintendo ds.

For me it would be The Witness and The Witcher 3. Always loved puzzle games. Never knew that RPG would be that much fun before playing earlier series.

Tales from the Borderlands. I own it, too. I've just never played a Telltale game alone, and my 2 Telltale partners aren't interested in it.
Maybe I'll eventually finally try a TT game on my own.

Monkey Island 2

I'd say DCS World. I own the A-10C and Blackshark 2 modules for it, but I can't seem to get into it. Flight simulators and role playing games are what got me into PC gaming (Falcon 3, MS Flight Sim and the Gold Box AD&D RPGs is when I started). I still enjoy RPGs, but I've fallen out of Flight Simulators lately. I don't know why I can't seems to get back into them. I used to love complex flight sims, like Falcon 4. Reading the manual, doing training and learning the avionics was part of the fun for me. I have the time, but when I usually end up doing something else with it instead.

Like everyone else... console exclusives. Not going to buy a console just for a game, sorry.

Looking at you Heavy Rain, Midnight Club III, Last of Us, and probably more that got completely forgotten due to it...

EDIT: And if it's any consolidation hopefully by the time you can play D:OS2 they fixed the couple thousand bugs I reported to them. Quest system is a MESS. For a hardcore RPG that's pretty much a sin itself.

Witcher 3, though I'm playing 2 now, and have just finished 1, so I'm going to do it soon probably. :)
And Bloodborne... no PS4...

I'm really looking forwards to play Wolfenstein 2: The New Colossus, Life is Strange and Until Dawn. They're all collecting dust in my PS4 games drawer but i'm too scared to play them. I've got a lot of school work (writing papers, making ppt's etc.) and i know that if i start playing, i won't quit until i finished them.

Life is hard for a gaming addict

No One Lives Forever

Witcher 3

Probably the new Zelda game. I don't own a Switch.

Tales of Phantasia for PSP

The older I get, the more games I don't play. Sadly. No time nor money nor will.

DOOM and the new Wolfenstein games.

I can't get it because I have a low-end rig. I tested the pirated versions and they ran like crap (low framerates etc.).

uncharted lost legacy

Styx: Shards of Darkness , Styx: Master of Shadows And Overwatch

Zelda: BotW and Super Mario Odyssey. I'm slowly accumulating money for my own Switch.

Divinity Original Sin 1-2
The Witcher 3
Dishonored 2
(maybe MGS5)

I have the faint sense of there's something quite recent, but can't put my finger on it.

Fallout 4 . I absolutely love the series but I lack the funds needed to upgrade my potato PC.
Don't laugh please, Q6600, 8gigs ram and nvidia 9600gt 1G
In any case though, I will play it some day (hopefully soon).
Now the REAL answer to your question for me, is that the greatest game I've never played is the proper sequel to fallout 2, Van Buren.
And the finale to Half life. And a proper sequel to the longest journey.

I'd say Uncharted: The Lost Legacy on PS4. Super Mario Odyssey and Legend of Zelda on the Switch. Hellblade on the PC or console. I don't own a switch and I don't have money for the rest :P

The first Dark Souls.
And the third I guess, as well.
I got the second gifted to me from a friend when it was the main sell of the Humble Monthly.

Most of nintendo games, can't afford one of their consoles atm