FoldShift

At the center of the screen rests a 3D paper surface, with colored numbered light trails illuminating along fold creases to reveal the folding sequence. Players can toggle between three hint views: fold order, overlap, or mirror hint. A single pattern fragment — a star dot, color block, arrow, or arc — appears on the paper. After folding, the fragment undergoes mirroring, occlusion, and layering; players must determine which regions it occupies once unfolded. Below, 3 to 4 candidate expansion diagrams appear not as static images but as 3D mini-boards with subtle floating, glow, and shadow effects. Tap an answer, a loading animation plays, and the verdict is revealed.