A little bit of an unusual resource but many educators are touting the effectiveness of teaching students about responsibility and collaboration through virtual adventures and role playing. This may not be for everyone, but certainly could be powerful with some learners. There is a free trial offered before committing to payment.
Teaching with integrity on this subject requires knowledge and resources, all of which are offered here through links to journals, articles, reviews, websites, organizations, and resource materials. You will find a particularly useful Powerpoint presentation for educators on the first page (4th link down) of this site under "Experiential Learning Presentation."
This thorough source offers insight into how experiential learning is for everyone, children and adults alike. There are may excellent reference materials mentioned and a collection of relevant sources on the subject, including books and websites.
Sustainability is just one of the many things that can be addressed during adventure learning. This intelligent article outlines some history of this method and the positive outcomes seen in students as a result. It discusses experimental learning at length and compares different approaches.
The role of play and adventure in cognitive development is well established; however building a curriculum around these activities can be challenging. How a student's "play" can meet learning objective and goals is well outlined here.