I would say PC, but for the sake of keeping things interesting and avoiding the whole "how do you define a PC era" thing, I'm going to go with a more provocative answer...the PS3!

Now, this is the part where you probably do a double take, but bear with me here, I'm going to just spout a bunch of titles in defense of this answer. Naturally you won't like them all. I will say that while I don't think they're all great, I liked all of them, one of them is even my number 1 RPG (spoiler: It's Trails of Cold Steel 2). No scraping the bottom of the barrel here with games I actually didn't like. I did include multiplatform titles, as well as Japan-only releases. Some of them, you'll think "But those are PS4 games, not PS3", to which I say they were released on PS3 in Japan

That said...

Demon's Souls, Dark Souls 1 + 2, Tales of Graces f, Tales of Xillia 1+2, Tales of Zestiria, Tales of Berseria, Tales of Vesperia, Persona 5, Ni No Kuni, Final Fantasy XIV, Ar nosurge, Ar Tonelico 3, Atelier Rorona/Totori/Meruru/Ayesha/Escha+Logy/Shallie/Sophie, Resonance of Fate, Eternal Sonata, Deus Ex: Human Revolution, Mass Effect 2+3, Trails of Cold Steel 1 + 2, Fairy Fencer F, Nier, Final Fantasy XIII trilogy, Oblivion, Skyrim, Fallout 3 & New Vegas, Hyperdimension Neptunia 1, mk2 & Victory, Valkyria Chronicles, Dragon Age Origins + 2 + Inquisition, 2nd Super Robot Wars: Original Generation, South Park: The Stick of Truth.

And I didn't even include remasters, I figured I'd leave them out in case they don't count.