Hi! :)
The game requires a horizontal resolution of at least 320 pixels. Amstrad/Schneider CPC has a horizontal resolution of 160 pixels if more colors are used.
Since the C64 version also uses 160 pixels, I think it might actually be possible to port the game to the Amstrad without too much hassle.
I have it on my list, but I haven't done enough research on the Amstrad machines to be sure if it's really feasible (i guess it is). I'm sorry, I can't give you a definitive answer right now, but rest assured: I WILL try it! :)