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Upgrade your hand spinner with a DIY project! Learn how to increase spinning speed and spin for longer durations using simple techniques. This 3D game tutorial explores the physics behind spinning, offering insights into hand mechanic design, customization, and arcade-style gameplay. Perfect for Unity3D developers looking for fun, casual projects with mouse controls. hand spinner, DIY, 3D game, speed, duration, physics, Unity3D, arcade, casual, customization, game mechanics, hand mechanic, spinning, ball bearing, upgrade, 3D, action, adventure, funny, hypercasual, space