Modify ocean level
 Hold [Option] in the Edit window. Then select "Raise/Lower" land tool. 
 Additional options should appear allowing you to change the sea level. 
 
 More money
 Type "fund" while the mouse pointer is in the toolbox. 
 
 Plants and animals are extinct
 Type "erad" while the mouse pointer is in the toolbox. 
 
 Random altitudes
 Type "rand" at the map window. 
 
 Robots
 Place an atomic bomb in a city of the Nanotech Age. The robots will 
 escape and live as separate life forms. 
 
 Smooth terrain
 Type "SMOOTH" in uppercase during the game. 
 
 Create All Hidden Items