Cowboy Kid ROM Download for Nintendo (NES) on Emulator Games. Play Cowboy Kid game that is available in the United States of America (USA) version only on this website. Cowboy Kid is a Nintendo emulator game that you can download to your computer or play online within your browser. You can also download free ROMs such as Kid Icarus, Karate Kid, The and MC Kids as shown below. Cowboy Kid works on all your devices in high quality.