Loopshift · Sixteen Studio
Shift an entire row or column and wrap tiles across the edge to restore numerical reading order. Eighteen solvable Sixteen studies in 3×3, 4×4 and 5×5 sizes, with keyboard and pointer controls, home markers, unlimited undo, guided hints and local progress. No empty square: every move shifts a full line. Source: https://github.com/chrisboyle/sgtpuzzles/blob/d1e10eb57dd80af4999e698a9ab31f546e9a0b9d/app/src/main/jni/sixteen.c (MIT source license), commit d1e10eb57dd80af4999e698a9ab31f546e9a0b9d. Metadata tags: github-source, game.
Every public app is built from a security-scanned skill and must pass a clean scan — skill and frontend — before it can be listed. Have a skill of your own? Turn it into an app — or read the step-by-step walkthrough.