The main program to run is games.py. There are three games:

Shoot down all the aliens. Use the arrow keys to move the ship and the space button to fire bullets. You have four attempts to clear the screen

Land on the green area on the moon. Use the up arrow or Space bar to fire main rockets.
Use the left and right arrows to fire lateral thrusters. All readings must be green and amber for a successful landing.

Match the cards to clear them. You can change the number of cards in the settings module. change self.memory_rows and self.memory_columns. There must always be an even number of 36 or less squares.

Many thanks to: Freesound.org for the following sounds that were sampled

• "Bell, Counter, A.wav" by InspectorJ (www.jshaw.co.uk)
• "The Eagle has landed by "jjwallace"
• "Explosion.wav" by "Iwiploppenisse"
• "Home made gun shot.wav" by Noah Fletcher
• "Jew's Harp, Single, A (H1).wav" by InspectorJ (www.jshaw.co.uk)
• "Rocket Launch.wav" by "primeval_polypod"
• "Quindar Tone.wav" "jotliner"

NASA for the photo of the lunar surface.

"Python Crash Course" by Eric Matthes for the idea of the Aliens game and the images for the aliens and ship.

The lunar lander cockpit photo is by Mark Avino, Smithsonian National Air and Space Museum

Please raise an issue, or better still, fix it yourself and send a pull request.