One Must Fall (OMF) is a fighting game series for the IBM PC compatible, programmed by Diversions Entertainment.
The original One Must Fall is a game demo created in the wake of the success of Street Fighter II.
It features two human fighters, resembling the Karate Champ characters, who fight in a single arena.
In-game competitors were connected to a machine which allowed them direct control of, and shared sensation with, their robot counterparts.
Developed by Diversions Entertainment and co-published in December 2003 by Diversions Publishing and Trisynergy Inc. following nearly seven years of development, One Must Fall: Battlegrounds brought the One Must Fall series into a second installment released in an age where the gaming world expected graphics and gameplay in three dimensions with internet gameplay as integral portion of the offering.