Fight Checker 3D is a free board game available on Android developed by WON JUN CHOI. This game is a 3D version of the traditional Alkkagi board game played in Korea. The game comes with a physics engine that makes the gameplay more realistic.

The game offers three different modes to play - Alkkagi, Janggi, and Getting in line. In Alkkagi mode, players can compete with black and white checkers. In Janggi mode, players can drop a checker on a chessboard, and in Getting in line mode, the objective is to put the checker close to the line.

The gameplay is straightforward; players need to select the play mode and map to start the game. They need to place their checker on the camp and drag it to push the opponent's checker. The longer they drag, the farther the checker flies away. The game offers two play modes - player vs computer and player vs player.

Overall, Fight Checker 3D is an entertaining board game with a realistic physics engine, which enhances the gaming experience. The game is easy to play and offers multiple modes to keep the users engaged.