Bolt Bench

A chunky cartoon workbench full of bolts and jumbled hex nuts. Spin them off, screw them on, and watch a cap nut thunk down on every bolt you sort. Every tenth level hides its nuts under rust until they reach the top.

How to play

Tap a bolt to unscrew its top nut, then tap another bolt to screw it on. A nut only goes onto an empty bolt or a nut of its own colour, and matching nuts on top move together. Sort every bolt to one colour to clear the level. Undo and restart are free; spare bolts give you room when you’re stuck.