With the talk of homebrews on other systems, I thought I'd mention one of the latest for the Atari 2600 - Space Rocks which is an updated port of Asteroids/Asteroids Deluxe. The homebrew scene for classic consoles is thriving and the talent out there is amazing. I did a review of Space Rocks for those who are interested - http://www.youtube.com/watch?v=FsFzmdGRG7k