Vintage 1970s Acrylic Black Square Dexterity Kinetic Ball Desktop Puzzle Game

Vintage 1970s Acrylic Black Square Criss Cross Dexterity Kinetic Ball Desktop Puzzle Game Box. Midcentury modern premium plastic dexterity puzzle game features a textured plastic housing highlighted by a distinct textured beveled framing and sides around the clear acrylic top viewing window. Embracing a geometric aesthetic that grew popular in the 1960s and 1970s, this rare pocket labyrinth bypasses traditional cartoon backings for a clean, brutalist design that doubles as a fantastic fidget sensory toy or desk accessory. It is an ideal piece for collectors of vintage toys & hobbies, retro pocket puzzles, analog hand held gamers and historical brain teasers.  How to play: Operates as a centrifugal force physics puzzle rather than just a standard tilting maze. It is inherently designed to resist basic tilting, serving as an old-school brain teaser and test of patience. The Challenge: Four long diagonal tracks slant downward toward the outer corners. The Goal: Maneuver and trap all four ball bearings into the short inner slots surrounding the center white node at the exact same time or the outer end of the tracks.  CONDITION REMARKS:  •	(E) Excellent condition vintage, Pre-Loved, Pre-Owned, Gently Used, complete with no missing pieces, works as designed, minor condition blemishes include hairline scratches minor minimal scuffing, coloring is bright with no patina on metal, no breaks, no fractures.    SIZE / DIMENSIONS: (In inches) •	4”~ Square X .75~High