PCCheats
Populous

Walkthroughs and Guides
Outside link to all the information you'll need on this game, and more!
Includes cheats and links to cheats and hints..
Courtesy of: Gamefaqs.com

MASTER CHEAT
During play press:
Tab (which is the key on your keyboard that looks like:
 I<--
                 -->I ).
Anyway press tab+F11 and type in the box byrne and press enter now hold 
tab again and press F1 F2 F3 F4 F5 and tada!!!!!! 
*note#1 make sure active board is off*
*note#2you have to hold tab and press F1 F2 F3 F4 F5 after completing every level*

Submitted by: Ashley P