The ornamental design for an interactive gametower, as shown and described.
FIG. 1 is a perspective view of an interactive game tower showing our new design;
FIG. 2 is a right side elevational view thereof, the left side elevational view being a mirror image thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a top plan view thereof; and,
FIG. 6 is a bottom plan view thereof.
The broken lines environment of the bracket is for illustrative purpose only. Other broken lines indicating disclaimed portions of the design. None of the broken lines form part of the claimed design.