I found an extra different on the traffic level. Second building from the left has no lights on the left picture but a column of lights on the right picture.
Kong is certainly lacking in non-bloodshed games and this one is an excellent example of something fun that doesn't require the violence. Great graphics and well made. 5/5
Problems:
Poor spelling: Either have nonsense words or clear these up.
Bosses: The comments are correct. The requests are completed and yet the bosses do not die.
Suggestion: You strongly need to consider mirroring this game around. The language, english, that you have selected for this game is read from left to right. Therefore, the ninjas need to enter from the right. In this way your players are able to begin typing as soon as a ninja appears.
Seconding knight_34's suggestion about the forge. It takes a lot of time to sell all the junk.
Additionally - KONGREGATE NEEDS TO CLEAR OUT THE CHEATERS IN THE HIGH SCORES
Max gold of 9.2233? It's not like they're hard to spot.