Virtua Tennis Challenge, one of the most popular tennis franchises of all time, has gone Free for a limited time. This is part of a new bundle of 26 paid apps Amazon is giving away, of which 4 apps are compatible with the Fire TV. It’s been nearly a year since this game has been free. The game features multiple modes including quick matches, a world tour, doubles matches, and multiplayer. It works with either the Fire TV or Fire TV Stick, but does require a Game Controller.