Press the Green Flag to start. The spaceship continuously moves around. Press the d key to go right. Press the a key to go left. Press the w key to go up. Press the s key to go down. Press space to launch an energy ball at the asteroids. Aim the energy balls by using the mouse. As time goes on the score goes down by 1. When the score hits zero, time is up. Cheats: Press the x key to fire a star burst pattern.
The original game is by "Al Sweigart" in the book "Scratch 3 Programming Playground." I tweaked the code for the Asteroid sprite by "Al Sweigart" so the clones work and added the code that plays the background music. Thank you GameDesignTeacher for the spaceship sprite. Credit to "Al Sweigart" for the Explosion sprite and all of it's costumes, the spaceship sprite, and the Asteroid sprite. I drew the background called "Galaxy" in "Kleki" Background music "Deep Space" from Fishlabs' game Galaxy On Fire 2 https://scratch.mit.edu/projects/72497928/ by @Lost-in-Space