Here's a link to the original game. It predates windows XP, you you need a Dos Sim to play it, but I think you'll like it. I wrote a book on the design and production of it with full documentation of the original Euphoria source code.
http://www.berighteous.com/OidZone2001.zip
I did all the art, music, funny voices, sfx, and wrote the entire game engine from scratch. I produced 6 space games based on the game engine. I'd love to do something similar in game editor for the GP2x. I have no idea at this point how to do it, but I think it's doable. I'm not sure how to accomplish the virtual screen clipping since it's smaller than the actual game window.
if anyone would like to email me some tips or ideas, I'd appreciate it.
Michael Packard
pastor@berighteous.com