Cheatmode:
In-game just press 'Enter' and enter one of this codes 
(do not forget to press 'Enter' again) 

Code - Result 
izmena - Switch to other players by clicking their color 
multitvar - Access other players units by pressing "P" 
supervizor - Toggle show entire map 
www - The above 3 cheats combined 
money - Give 50000 Wood, Food, Stone, Gold, Iron and Coal 
VICTORY - Win level (CASE sensitive!)