This was the very first complete game I made with Unity, with another friend, back in 2014.
You have to control a colored ball, and follow the path of your color. You can change the ball color, to switch paths.
We made it to the end, and released it to the Play Store. But, as it happens so often, the game was rapidly buried in the market, and now it is almost impossible to find it.
Anyway, cool experience. And it was the first time I used Unity shaders.