Contra Force ROM Download for Nintendo (NES) on Emulator Games. Play Contra Force game that is available in the United States of America (USA) version only on this website. Contra Force 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 Contra, Lifeforce and 100-in-1 Contra Function 16 [a1] as shown below. Contra Force works on all your devices in high quality.