In the game, four identical pieces merge to form a single, bigger piece. The goal is to fill the entire screen with one single color. However, it doesn't end there. The challenge is to merge all of the pieces into a single structure, which is made out of four, four, eight, or even sixteen pieces. Once the structure is completed, the level is completed as well.

The gameplay is simple and intuitive to understand, and yet, the gameplay gets more and more challenging as the game progresses. It also introduces new elements to keep the gameplay fresh and interesting.

It's free to play and easy to pick up, yet difficult to put down.