Heres a little hint people! =D
I loved this game so much that I posted some of the secrets I found for your viewing! =D
Go to the jungle area, you should find a little frog at the bottom. if you click the frog when the fly comes close you'll get $500! Also, same map, if you click the little green plan near the stream (or between here legs) a special someone comes in, if you click the special person, you get $200!
Hope this helps some people!
* I think theres another mini game on the jungle area, but I haven't figured it out yet =(