The AMS was an American government agency responsible for worldwide criminal investigations and intelligence collection. Since the 1998 Curien Mansion incident, it has handled numerous cases involving outbreaks of biologically-engineered creatures. In 2003, the agency disbanded in wake of several other incidents. All remaining AMS agents have continued to collaborate in order to protect mankind, with top-ranking agent Thomas Rogan leading a secret division of survivors to accomplish this.

The AMS serves a heroic faction in the main House of the Dead series, as well as the spin-off titles The House of the Dead: Overkill and Zombie Revenge.


While the AMS' true purpose is never stated, it appears to be outside of other US Government organizations and/or jurisdiction. For example, when G confronts Papa Caesar he specifically places Caesar under "AMS arrest", though it is left ambiguous whether G actually has this vested authority or if this is a simple threat.

The Zombie Revenge instruction manual claims that the AMS is an American agency, this was later verified in Overkill, revealing that it was active during the 1950s being involved in the secrecy of the experimental "Formula X" that was originally intended to be used in "OPERATION OVERKILL".

Known members

The House of the Dead canon



Unknown status

  • Unnamed AMS Director

Zombie Revenge canon



  • The House of the Dead's Sega Saturn manual mentions an AMS Director, who claims to have some experience on Dunwich and the Miskatonic delta.
    • Overkill also mentioned an AMS Director as well, though it is unknown if they are the same individual.
Community content is available under CC-BY-SA unless otherwise noted.