Abstract: A compact gravity-driven distribution mechanism for spherical objects comprises a spherical objects container, a deflector inside the container, and a spherical objects regulator with a rotary plate attached at the bottom. Spherical objects are pre-loaded or dynamically flow into the spherical objects container and the deflector in the container guides spherical objects into the spherical objects regulator underneath the container. The spherical objects regulator regulates the spherical objects into three chambers where the spherical objects are ready for discharge. Spherical objects flow out of the spherical objects regulator in three streams. The rotary plate can be rotated to shut or open the channel of spherical objects flow. Spherical object flow is driven solely by gravity, which makes the mechanism energy efficient. The compound structure of this mechanism can be small and compact, making it easy to be deployed.