Enable Cheat mode. Then press [Alt] + C during game. (Note: Cheat only works if you have less than 5,000 denarii.)

Open the C3MODEL.TXT file in a text editor. The file contains easy to follow instructions on how to change the game. By editing the file, you can change the economy (and make construction free), improve desirability, evolve tents into palaces, etc.

Place barracks in far-removed places.

Right click on a well and press [Ctrl] + K or [Alt] + [Ctrl] or [Alt] + K to activate cheat mode.

Enable Cheat mode. Then press [Ctrl] + V or [Alt] + V during game.