Hmm I remember Populous with mixed feelings. Of course the idea and concept were brilliant, and the first levels were thrilling and all that, but I thought in later levels it often happened to be unfair. Like your possibilities were badly limited while the PC player could do everything... it's such a think that I dislike. Plus the computer got real slow in some of the crowded levels so all your actions were delayed. Again a big advantage for the computer player. That's this kind of unfairness that I do not like in games. Multiplayer battles via serial link were the bomb though.
Wow! I'm surprised that this is the first comment for this wonderful game!
Anyway, this is worth getting simply for the fact that it was the first ever Godgame, and I would call it a 'Classic' game... however, I wouldn't call it an ST Classic, due to the simple fact that it wasn't an Atari exclusive... more than worth having in you collection though!
Two thumbs up!