The ornamental design for a dartgame, as shown and described.
FIG. 1 is a front view of the dart game, showing my new design;
FIG. 2 is a rear view of the design illustrated in FIG. 1;
FIG. 3 is a top view of the design illustrated in FIG. 1;
FIG. 4 is bottom view of the design illustrated in FIG. 1;
FIG. 5 is right side view of the design illustrated in FIG. 1; and,
FIG. 6 is a left side view of the design illustrated in FIG. 1.
The dash-dot-dash lines represent the bounds of the claimed design, and the evenly spaced broken line showing is included for the purpose of illustrating portions of the “article” and forms no part of the claimed design.