We're studying rapid-prototyping of casual games here at Mages Institute of Excellence in Singapore (http://mages.edu.sg/). We've used Construct 2 to create prototypes of simple games, and we'd love some feedback from the Construct 2 community!
Here are our shooter games, on Google drive:
Jungles of Borneo: https://googledrive.com/host/0B3oPUL_jFbKgcFREVHAyNkZ3eTA/index.html
Neon Aliens Shooter: https://googledrive.com/host/0B-6-BJRRatFBOVB1bkwwaEN2WXc/index.html
Space Whirl: https://googledrive.com/host/0B4BL6Gi7qofMcEM2djIxTEpiYVk/index.html
Space Survival: https://googledrive.com/host/0BzauYThm4-TnOTVwUXFWaDcwY28/index.html
Please try them out and let us know your impressions.
Teacher, Casual Game Design
Mages Institute of Excellence, Singapore