Screw Master 3D: Pin Puzzle

Unscrew rusty bolts, slide washers, and pop tension springs in a hyper-detailed 3-D workbench. Every mechanism is a miniature escape-room: sequence matters, hidden locking pins surprise, and real physics make metal parts clink and fall with satisfying heft. The workshop expands with each cleared puzzle, rewarding tinkerers who love hands-on mechanical ASMR.