Recently, there is a new genre coming up. First-person-shooters where you don't actually shoot to kill, but use the default gameplay mechanic to navigate, explore and interact in order to solve a puzzle. Portal is an example of that, as well many other indie titles coming up with that style.
Do you think it's a good thing? Do you feel attracted to this genre? Which ideas do you think would fit this new genre perfectly?
I loved Portal, it was something new and a lot of the challenges were actually challenges. I've been waiting for a sequel since I finished it.
As for new ideas etc. I could see something like Rube Goldberg type machines & puzzles fitting well with a Portal based game.
The Half Life 2 episodes does some puzzle parts.
I'm mainly thinking about finding the way through non-obvious passages in fenced-off buildings.
I think Myst was the first of the genre to introduce first person puzzle adventure. They are indeed fun, although from what I recall seeing in a report they're most popular in Asia (Japan in particular) and have become less popular in North America over the years. I think a lot of the driving force behind Portal is its cult-attracting environment. The companion cube and sign posts have pretty much gone viral with plush dolls, coffee mugs, real-life remakes, birthday cakes, apparel, etc.