Sort every nut onto its bolt. Fastest fingers in the family win.
Nut sort puzzles — you may know the genre as screw sort, or “sort by color” games — grew out of the great mobile sorting craze: water sort, ball sort and their cousins, all descendants of the same idea as the century-old Tower of Hanoi. Restore order, one careful move at a time. The hardware-store twist adds something the others lack: nuts physically thread onto bolts, so every move feels like tightening something real.
This version is free, has no ads, and never runs out — levels are generated endlessly and every one is guaranteed solvable. Play solo, take on the shared daily puzzle to build a streak and bank a spare-bolt token — spend it in endless mode when a level has you pinned — or start a duel and race someone on their own phone: same puzzle, two screens, first to sort it all wins. No app, no account — it even works offline once loaded.