I would design my lesson around this game. The game is quite a simple one so lots of improvements or changes could be made. I would get students to play the game, write down the features and then to expand their learning they would need to add a minimum of 1 section/features to the game creation (e.g. add another drink, add a decoration feature) and describe their process in doing so. This would help to understand programming at its basics and build upon skills they would already have with the program.