In this paper, we propose a gun-shaped VR haptic controller and an immersive First Person Shooting (FPS) game based on the haptic controller. The proposed VR haptic controller is composed of a bluetooth module for remote communication, a vibration motor for tactile feedback, an inertial measurement unit for motion recognition, a microprocessor, an input button, a battery. The proposed gun-shaped VR haptic controller enables remote communication with virtual environment applications in real-time. Furthermore, the proposed controller generates haptic information and conveys it to user in real-time when he/she shoots a gun in virtual reality game. We inserted two vibrotactile actuators : one is mounted inside the rail cover and the other one is embedded in the vertical handle of the controller in consideration of the position of the user's two hands in order to maximize the haptic effect. In addition, the proposed VR haptic controller has an inertial measurement unit so that the viewpoint of the virtual camera in the game application is changed according to the tilt of the VR haptic controller. In this paper, the objective of virtual haptic game is to kill zombies using the proposed gun-shaped haptic controller. When a character in a virtual game fires a bullet to a zombie, the gun-shaped haptic controller provides a realistic tactile sensation to a user. Therefore, the proposed FPS game is expected to create rich sensations (visual, auditory, and haptic feeling) and to immersively interact with virtual game through a gun-shaped VR haptic controller.