The ornamental design for a set of gameballs, as shown and described.
FIG. 1 is a top and side perspective view of a set of game balls showing our new design;
FIG. 2 is a top view thereof;
FIG. 3 is a re-arranged top view of an alternate embodiment of the set which excludes the numeral 7 and 8 ball elements included in the first embodiment; and,
FIGS. 4–7 are top view of four of the individual ball elements of the set, shown separately and on an enlarged scale for a clearer disclosure of the surface detail.
The portion of the ball components that are not visible in the views, and the particular arrangement presented in the views, form no part of the claimed design.