Scratch is an educational tool from MIT designed to teach people to program. For those who already know how its a really easy way to create games. The latest version (2.0) is written in Flash which means it is unusable on hardware like the RaspberryPi. I’ve just released a program which will take a Scratch project and convert or compile it into an executable using Monogame. It currently is for Windows only but hopefully get to Mac,Linux and RaspberryPi the ultimate destination soon.
For instructions to download the compiler http://scratch.mit.edu/projects/35417838/