Instructions in-game. UPDATES: (1/10/2019)*Added world high score - it is kind of big and makes the game harder - I am working on it. (1/3/2018)*Added my intro to it and to the thumbnail. (October 2018)*Got rid of the 'monster glitch' where monsters continue to attack even when on the main screen. (October 2018)*Made a main screen. (It only half worked.)
Jon Woodcock & his book entitled 'Coding Games in Scratch'