It's finally time for the second installment of my "yellow," "red," "black," and "blue" games!

Can you complete all 50 levels without the screen turning green?

Every level follows a different set of rules in terms of logic.

Do you need help? If you get stuck on a level, you can get some help by clicking the light bulb button that will show up in the top right corner after some time has passed.

There are a number of helpful hints available for each level.

When you purchase the premium unlock in-app feature, you will no longer be subjected to advertisements before the hints.

A puzzle game created by bontegames in collaboration with Bart Bonte.