VOI turns an unusual arithmetic idea into the foundation of a quiet, minimalist puzzle game: under XOR logic, one plus one equals zero. Its black-and-white puzzle premise follows the same rule, asking players to consider how two black shapes can combine into white. The rules are simple to state, but the game frames them as a challenge rather than an ordinary sum.
Each puzzle supplies draggable geometric pieces, including triangles, squares, rhombuses and parallelograms. The task is to arrange those shapes to match a target, applying the XOR relationships to work out which pieces belong together. That compact combination of visual construction and binary logic gives VOI its distinctive appeal: the challenge comes from interpreting the shapes and their relationships, not from a sprawling set of systems. The store description also highlights music and sound effects as part of the experience.
The game is described as a one-page design, with no start or exit button, and players scroll through levels using the mouse wheel. That continuous, pared-back format distinguishes VOI from games organized around separate menus or multiplayer sessions.
