This is Q

To give a full 3D view of this construction, we put it on a lazy susan, gave it a spin, dropped in some balls, and started filming.

Just three kinds of cubes go together to make this and all Q-BA-MAZE constructions. This one is made with less than three 50-packs.

Notice that the balls all collect at the bottom (rather than scattering on the floor). This is because we used the bottom-exit cubes to make the base. Whenever the bottom-exit cubes are used as the base, they act as "catcher" pieces.