Nexon America today announced that Combat Arms, their free-to-play, online multiplayer first-person shooter game, has surpassed one million registered users since its open beta launch in July. Combat Arms was commercially launched on October 1 with the addition of the Black Market, the in-game item shop that allows users to spend real money to further customize their characters. The game enlists players into various battlefields across the globe to face-off against other ambitious soldiers of fortune, delivering gamers a FPS with an extensive arsenal of weapons, no locked areas and no monthly subscription fees. Players earn their keep through precise marksmanship, teamwork and stealth. Check the press release for details and download the client here.