In all, there are more than 200 levels in 5 Differences, which means there are basically 200 photos to find differences in. As you might imagine, the fewer times you tap the screen, the more points you receive for completing the level. As such, the game deters you from simply 'pounding' the screen in search of differences. What's more, the app has a kind of 'friendly wildcard,' which supposedly helps you to find more differences.
5 Differences is a spot-the-difference game which is as simple (or complex) as this kind of game can ever be. Naturally, it is an entertaining pastime for those in search of traditional games. Besides, it is one those videogames that works on practically any Android device, however old it is.