Press the green flag, then choose your level of hardness. Easy: Only die when the dragon is touching the spaceship. Hard: Die when the dragon touches the death line. Have fun!
I made this by myself. I hope you enjoy it! It took me three days to complete this project. (P.S: This is a forever game with no high scores. If you do want high scores or anything else, tell me how to do it in the comments. Thanks!) (Do remind me him there is any bugs/errors.)