WHY PEOPLE PLAY
Color sort puzzle games turn a set of mixed tubes into a planning problem. Each move is easy to understand: pour an exposed color into a compatible tube. The challenge comes from order. One pour opens a layer, occupies working space, and changes which matches are available next.
The format is often called a water sort or liquid sort puzzle, but the useful strategy is the same: preserve spare capacity, combine exposed matches, and avoid burying a color under a stack you cannot reopen.
Empty space is part of the solution
An empty tube is not wasted space. It is a temporary destination that lets you reach buried layers and reorganize partial stacks. Before filling one, check whether another tube can take over that role. When the board tightens, the most valuable move is often the one that creates a new empty container.
SpillD expands the familiar sorting loop into a 240-level offline campaign with nine chapters, one-to-three-star results, daily puzzles, achievements, rescue tools, and later modifiers such as locked tubes and frozen segments. Its Android edition has been submitted to Google Play and will be linked here as soon as the public listing is verified.
