I wanted to bring the design list's attention to the new Wikipedia
Adventure project, which you can now pre-alpha-test. It uses
GuidedTours functionality to provide "an educational, interactive,
web-game using a simulated Wikipedia interface which leads new users
through a series of realistic 'missions' to familiarize them with the
mechanics, navigation, philosophy, and practices of actual editing."
https://en.wikipedia.org/wiki/Wikipedia:The_Wikipedia_Adventure
More information:
https://meta.wikimedia.org/wiki/Grants:IEG/The_Wikipedia_Adventure/Timeline
Thoughts on badges, game dynamics, incentives, and motivation...:
https://en.wikipedia.org/wiki/Wikipedia:The_Wikipedia_Adventure/Research
The main creator, User:Ocaasi, would love your feedback!
https://en.wikipedia.org/wiki/Wikipedia:The_Wikipedia_Adventure/Feedback
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Sumana Harihareswara
Engineering Community Manager
Wikimedia Foundation