The challenges contain two images composed of eyes: one defined on the right and one interactive on the left. In the center, a series of rules will change the color and shape of the eyes in the left image.
The goal is to compose the left image so that it is identical to the right one once the changes are applied.
There is also another option where both images are defined, and it's up to you to create the change rules.
Features:
A hundred challenges to solve across 10 difficulty levels
Relaxing atmosphere (or not if you're trypophobic!)
