The ornamental design for a gameplaying apparatus, as shown and described.
FIG. 1 is a front perspective view of a game playing apparatus showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a first side view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a bottom view thereof;
FIG. 6 is a second side view thereof; and,
FIG. 7 is a perspective front view illustrating the attachment of the several parts that make up the design and the alternate locations of two elements of the design.