Walk (Linux)

Look for planets orbiting it and the dark sparks it emits. Although you don't have to look for it, you can just walk around, listen to the peaceful music and soak up the wonderful atmosphere. You and the sphere are randomly placed around the world so each playthrough is different.
A simple exploration game with a beautiful visual style and atmosphere with simple, intuitive controls. Your only real objective is to find the darkly coloured sphere.