The subject was left in constant pain and with unstable DNA. It escaped captivity, killing anyone that got in its way. The I.R.I.S (Infinitum Research Intercept Squad) team has been deployed to return the subject to a maximum security Infinitum Research facility for further study and dissection. As I.R.I. team closes its net, subject 617, known as "The Hidden," must turn the tables on the team, becoming the hunter instead of the hunted!
This release of the mod Hidden: Source includes 5 maps and two playable classes. The players must hunt down subject 617, a hidden player with enchanced abilities. In turn, 617 must prey on the other players.