This category includes a variety of non-twisty brain teasers and mechanical puzzles that do not rely on rotating cube layers. It covers sliding puzzles, metal disentanglement puzzles, wooden interlocking puzzles, gravity puzzles, logic assembly toys and other classic puzzle types. These puzzles focus on observation, spatial reasoning, patience and step-by-step problem solving, offering a different kind of challenge from traditional twist cubes. They are suitable for puzzle beginners, brain training players and collectors who enjoy diverse mechanical puzzles.