Google Open Spaces
Open Spaces is Google’s campaign to promote Chrome browser usage in Indonesia. They created a web-based mural creation tool where user can create their own and the winners’ would be painted in real buildings in Jakarta.
I was involved in the beta testing phase to test the tool and provide feedbacks, and also helped to recruit other testers.
See one of my works here: https://www.openspaces.co.id/creations/8003