Bolts - Unscrew It

Bolts - Unscrew It hides its logic puzzle inside a mechanical framing: a set of bolts holds pieces trapped inside a frame, and unscrewing them in the wrong order can lock the whole puzzle instead of freeing anything. Working out the correct sequence means reading how each bolt's position blocks or enables the others, the same dependency-tracking reasoning used in sliding-block puzzles. There's no time pressure pushing you toward a guess, so it rewards actually studying the frame before touching anything, rather than unscrewing bolts at random and hoping something works out. Each layout has a determinable correct order, which means getting stuck is a genuine invitation to look more carefully rather than a sign of bad luck. It's a satisfying pick if you like puzzles where the aha moment comes from spotting a dependency you'd initially missed. Free to play in the browser, no download required.