Fold Merge

Fold Merge is a number puzzle made for the folding display of iPhone Duo. Your Duo's inner screen holds two halves of one board, bound at the spine like an open book. Swipe either half to slide its tiles. Then bend the phone inward a little: tiles pack toward the fold, the pair meeting at the spine merges, and equal neighbours within each half merge too. Open flat again and plan the next fold. Reach 2048 and it arrives as a sheet of hammered gold leaf. Keep going if you like. • Made for the hinge: the fold is the move. Every tile a fold would merge is underlined, and its lane is marked at the spine. • Learn in three moves: a short practice board teaches the swipe, the fold and the reopen. Replay it any time from Pause. • Calm by design: no ads, no accounts, no tracking, no timers. Works offline. • Japanese paper style: indigo aizome pages, numbers on dyed washi squares, sumi ink and a stitched spine. • Close it like a book: the outer screen becomes a bound cover that keeps your game and tells you it is saved. • Accessible: VoiceOver and Switch Control can make every move through lane actions, and Fold Merge follows Reduce Motion and your text size. Fold Merge requires iPhone Duo. On other iPhones it shows its cover and explains that it needs the folding display.