Unlike realistic simulators, Heatseeker focuses on explosive action, allowing players to lock onto dozens of enemies at once and featuring a "Impact Cam" that follows missiles to their targets.
If your emulator doesn't recognize the .nkit file, you will need the NKit processing tool and the associated recovery partitions to "repair" it back into a standard ISO. Download Heatseeker (USA).nkit
The "(USA)" tag indicates this is the NTSC version of the game, intended for North American consoles. How to use it Unlike realistic simulators