Far too easy. It is a great game but for the larger 20x20 puzzle, I think if there were multiple tiles of the same number near each other it would make the game a lot more challenging by forcing the player to look for an image and connect the dots according to what we think the image is, rather than simply drawing lines to what looks like the best (and normally the only) option.
 "Color Link-a-Pix Light Vol 1"){kind=icon}
 "Adventure Story"){kind=icon}
 "How fast can you click?"){kind=icon}
 "Pigs Can Fly"){kind=icon}
 "I Love Traffic"){kind=icon}