Tap a bolt to unscrew it, sort it into the box of its colour and watch the plates drop. Plan ahead: bolts that don't fit wait in a small tray, and if it overflows the jam wins.
Get it on Google Play- 120 solver-checked workshop puzzles across six chapters
- A new daily puzzle, the same for everyone, that works offline
- Stacked plates, padlocked bolts, washers and tight trays
- Every bolt colour has its own head symbol, so colour is never the only clue
- No account needed. Every level can be finished for free.