The Shivering Isles of the Might and Magic series!
Alright, don't expect quite the level of chaos and the narrative subtleties that the Shivering Isles, the expansion for The Elder Scrolls Oblivion was capable of, but nonetheless, considering the times and the technical advances achieved, Might and Magic: World of Xeen is a pretty impressive game, in the vein of that expansion that I've just mentioned. True, again, Might and Magic: World of Xeen is also a diverse game and a damn expansive one. I spent but a few hours with it, for about a week and I barely scraped it in terms of seeing all the content it packs. Yap, a game in these days meant a lot of content, buckets upon buckets of fun! That is why some might think, after just looking at it for a few minutes that it's yet another game, but in truth it is a might experience, one that demands lots of investment from you, and lots of free time. Also, do play Land of Xeen and Clouds of Xeen for good measure, as the stories are intertwined, granted, if you really look forward to actually investing months of play into these titles. Yap, that's what fully featured games were like back in the day! RPGs today are almost demo sized compared to these good old days, when you really had to program playing these games like it was a second job, hehe!