Link-a-Pix is a very interesting and exciting game for the whole family.
Simple rules, light design task thought-provoking, but not mind-blowing. What else do you need for a pleasant pastime.

To solve the puzzle, you only need to connect adjacent cells with the same numbers. Lines can be drawon horrizontally and vertically, they can not cross the neighboring lines and pass through the same cell twice. That's all the rules. Easy.

Lite version it's just random link-a-pix puzzles from full version.
You can skip pictures and reset progress.
The application is optimized for slow devices.