Exteel was a third-person shooter game published by NCSOFT, a Korean game company, and was developed by NCSOFT's E & G Studios. Players controlled giant vehicles called Mechanaughts ("mecha") and fought against the computer, or against other online players, in a variety of gameplay modes. The Mechanaughts were customizable. The game was free to download and play, but players could buy "NCcoins" with real money, through the NCcoin micropayment system. NCcoins could be used to purchase exclusive in-game weapons, skills, and parts.