"Hire Einstein-Find Guest 1 and 2. Name Guest 1 E=MC2 and guest 2 E=MC3. the 2 will meet and begin a conversation. a short while later they will be asked to be hired. say yes and they will make it so u will have every single cheat enabled." - john peters

"Press Ctrl+G to put a grid on the terrain in the game. Uhis will help if you are putting rocks or foliage on to an uneven turf!" - Super Bob

"When u press the letter m it will bring up your mailbox instead of using your mouse and pressing it to see what was your recent mail" - Sweetstuff40

"Ka befor you do the "shift, $" during the game you are playing hire as many zoo keepers and maintance then save quit and go to a different game really quick and go back to the game you were playing and hit "shift, $" in the very beging of the game befor you start to build and u can get up to 100,000,000!!!!!!! Know that is awsome."

WARNING- "your fences will start to disapper so get a malr maintance worker and name him "Bob V" then hit enter and all your fences will be fix." - Sweetstuff40

"the money cheat that you can get money from is you push SHIFT then you press the # 4 button and you hold them both as long as you want and you get 10K$ every time you press SHIFT and the # 4" - AngelChic4103