Welltris isn't really 3d. The viewport is, but the gameplay is 2d. It's on (five of the six sides of) the interior surface of a cube, but that's the same as i

Welltris isn't really 3d. The viewport is, but the gameplay is 2d. It's on (five of the six sides of) the interior surface of a cube, but that's the same as if those sides were folded out flat into a 2d plane. Each cell has only four adjacencies, not the six degrees of freedom that would exist in a fully 3d volume.