find by looking closely at your screen. When you find a difference, you just have to touch the area on the screen for the game to mark it as solved.
Don't worry if you can't find all the differences right off the bat. Find the Difference is here to help -- all you have to do is ask. That's what the little light bulb is for in the lower right corner. That said, if you use it too much, you'll have to wait a certain amount of time for it to load again. Also, you can't just start tapping all over the screen since you have a health meter that will go down every time you make a mistake.
Find the Difference is a fantastic puzzle game that can be enjoyed by the entire family since the images are appropriate for all ages. It's a title that's packed with levels to solve and where things get more and more complicated as you go.