I highly recommend Construct 2: http://www.scirra.com/construct2 http://www.scirra.com/construct2 It takes care of most of the heavy lifting when developing ga

I highly recommend Construct 2: http://www.scirra.com/construct2 http://www.scirra.com/construct2 It takes care of most of the heavy lifting when developing games for HTML5, but it still has a very open and powerful scripting language (unlike something like gamesalad which is more like using pre-built blocks). Edit - Ha, beaten by 1 minute.