all i remember is that the bad guys had purple space ships with which they attcked the peacful natives, and the space ships are invulnerable to the native's weapons, till one of them finds a ship with a sail made of gold (i think), that can concentrate the sun's rays and by that it can destroy the evil space ships.
and it's not "the lost cities of gold"...
anyone?

oh, terribly sorry, i intended posting it there, must have misclicked...

Yes, a mod can easily move it there for you.. :)

In fact

I just did.

doesn't sound familiar but will search and try to see about this one