Choose World options and type "itchy scalp" in the password promt, press enter then you will hear a funny noise. go back to the game and hold done "M" then you will see what's happening.
To be the most powerful god, with full power in all, type in "ADKITAKDVGZLRGWZ" as the password in the character generation screen (leave quotes out).
To get all the powers in the custom game, first select conquest and enter TIOW as your password. Then pick cancel to go back to the menu. Now click on Custom game, and you will have all the powers you need.