Inkturn is a calm single-player puzzle game about coordinating two inkfish that leave ink trails to collect every star.

It is built around this simple ruleset:

• Collecting a star switches control to the other inkfish.

• Each inkfish is blocked by its own trail, but can cross the other’s.

• Colorful neutral spaces allow either inkfish to enter freely and leave no trails.

Each handcrafted chapter explores a particular consequence of the same small ruleset, including ideas like repeated handoffs, pattern finding, relative positioning, and working toward shared goals.

Inkturn rewards thinking and planning rather than fast reactions. There is no time limit, undo is unlimited, and you have the freedom to choose your path to the next chapter.