Choose the mode that you wish to play on, then use your mouse-pointer to take out the floating pieces of garbage! Comment your high score on every mode, and see how long you can survive before your base is destroyed! Tips: Take out the pieces of trash in the middle first, they are most likely to touch the moon base, try to click slightly in front of the trash to hit it in hard or pollution mode, and take the time when you're reloading to analyze your next move.
Backstory: It's the year 3000, and the first humans have started to colonize on the moon. However, all the the space trash that has accumulated over time is now heading towards the moon! Use your laser to defend the moon base, and don't let it get destroyed!