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

Codes :
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!)
ai = ?