This topic would be better off in Discussions forum, so hopefully someone will move you along there soon.
In the meantime, here's an idea of what's available: PS3 "Adventures"
Not all of the games in that list are strictly Adventures, but you may recognise some titles.
I'd particularly recommend Journey -- one of the best adventure/exploration games ever made, in my opinion.
(Although Journey isn't on PC, as it's a Playstation exclusive.) Journey review on YouTube