I had big problems...
My first image was a dolphin... of this I am sure. However, when I guessed "dolphin" in the box, I very quickly saw "incorrect, try again" and was then presented with another set of 9 gray boxes. So i cliked a few, discovered a plane... at this point began my frustration. I guessed "plane", "airplane", "jet", and even went into some more specific things like "airliner", "jet plane", etc. but to no avail. You should make the system smart enough to accept multiple answers. For the plane, unless I was supposed to guess the airline, you should accept both "plane" and "jet", or even the more specific answers like "passenger plane". honestly, how hard is it to scan a group of words to find out whether or not the correct answer is among them? Try answer.split(" "), you'll then have an array of all of the words typed into the box by the player as separate array elements. Loop through them and compare them against each o the acceptable answers. As soon as you find a match, you're done, and the player leaves feeling satisfied rather than frustrated.