Free online course in Scratch: https://www.udemy.com/scratch-game-programming/?couponCode=GET_SCRATCHING
Many more games in the free Scratch Programming Playground book! https://inventwithscratch.com/book
Run this game program in your browser at http://scratch.mit.edu/projects/11629018/
With MIT’s Scratch 2.0 programming environment, Al demonstrates a “whack a mole” style game.
More Scratch screencast tutorials can be found at http://inventwithscratch.com