3D Badminton Double is a free Android game app developed by Homer Wang. It falls under the category of sports games and is compatible with Android 9.0. The game is all about playing badminton with an AI partner against another AI team. The AI partner plays in both attacking and defensive formations to help you defeat your opponents.

The game is easy to control, with a control pad on the left side of the screen to move the user-controlled player in the court. On the right side of the screen, there are three buttons to choose from for clear shot, drop shot, or smash shot. Users can prepare for the next shot by tapping and holding the button, slightly moving their finger to the left or right to control the direction of the shot, and then releasing the button when the shuttlecock is nearby. The AI partner will change into attacking formation for smash shots or drop shots. Otherwise, it will take a defensive formation if the user makes a clear shot. To win a game, players must score 21 points.

Overall, 3D Badminton Double is an enjoyable game that offers a unique experience of playing with an AI partner. The game is easy to control, and the different formations add a new level of strategy to the gameplay.