The third game in the series was officially announced by Croteam and Take-two interactive for both the PC and the Xbox in April 2005 and released on October 11, 2005. A PC demo was made available on September 21. Although Serious Sam II is actually the third game in the series, the first two games are widely considered to be two halves to one larger game, similar to Doom and Doom II. Thus, Serious Sam II might be considered as the true sequel to The First Encounter and The Second Encounter.
