Rider Action X is an action-packed game developed by Mappli for Android 9.0 users. The game revolves around the concept of a new computer virus that has infected humans, and you play the role of a buddy rider to save the patients. The game has four different riders- Mighty, Braver, Sniper, and Racer, each with their unique skills, to help you pass the mission.

The game's objective is to prevent the patient from dying while ensuring your HP bar does not empty. The game is challenging, and you must use your skills and tactics to kill the virus and save the patient. The game has a "Game Over will Die" motto, which makes it more exciting and thrilling to play.

Overall, Rider Action X is an engaging game that offers a unique gameplay experience. The game's graphics and sound effects are impressive, and the controls are smooth and easy to use. If you're a fan of action games, Rider Action X is a must-try.