I claim the ornamental design for a game apparatus, as shown.
FIG. 1 is a top front left perspective view of a gam apparatus, showing my new design;
FIG. 2 is a bottom rear right perspective view of the design shown in FIG. 1;
FIG. 3 is a front elevational view of the design shown in FIG. 1;
FIG. 4 is a rear elevational view of the design shown in FIG. 1;
FIG. 5 is a right side elevational view of the design shown in FIG. 1;
FIG. 6 is a left side elevational view of the design shown in FIG. 1;
FIG. 7 is a top plan view of the design shown in FIG. 1; and,
FIG. 8 is a bottom plan view of the design shown in FIG. 1.
The broken lines and the interior surfaces of the side walls in the drawings depict portions of the game apparatus that form no part of the claimed design. The shade lines shown represent surface shading and not surface ornamentation, color, or material type.