Welcome to GYM Stack 3D Game. You mission is to drag and merge weights and sort them to complete your level. Explore tons of challenging puzzle levels and try to complete them all. Let's begin Gym Stack 3D, merge weights game, puzzle game, arcade game, hypercasual game, weight puzzle, brain game, clicker game, mobile game, casual game, sort weights, challenge, levels, drag and merge, addictive, fun, easy to play, leaderboard, weight game, fitness game