Oblivion sold much better than Morrowind, for example, despite Oblivion being one of the blandest gaming experiences I can remember. Many of the worlds developed for D&D Second edition were never renewed.
Right now, indie gaming seems to be oriented around recreating gaming experiences from their childhood. But, some games are showing the seeds of true creativity.
I have the feeling that in video games, like in big blockbuster movies, the trend appears to be replacing substance with special effects / fancy graphics and recycling the same old ideas over and over. (I am probably overgeneralizing somewhat, but I do so to make a point. If there have been any games lately that really disprove my point, I would very much like to hear about them!)
Factoria - play as a one person industrial civilization.
Terraria - more than it looks at first
The Stanley Parable - better to go in blind, but plays with the structure of games
I have a vacation coming up, I think I will look into those! :)