Bicycle Differences

Interestingpictures with drivers and their bicycles are in front of you! Each of them ride their bicycle on different terrain. Your goal here is to find differences. There are five pairs of pictures, in each pair there are five differences. Find it! Use mouse to click on them. But be careful, if you click on a wrong position you get negative points and get less points at the end of the game. Maximum you can get 5000 points. Grab your mouse and find all differences. Have fun! Enjoy!