Stencyl provides a huge selection of characters, settings, and elements for gamecreation, and the in-built tutorial helps newbie to create their own beautiful game with easy.To create and direct the actions within your games Stencyl gives you a block-snapping interface to construct actions and sequences. The block-snapping interface will look familiar to people who have used Scratch or Android App Inventor.
Stencyl can be downloaded (55Mb) free at source here.