Underworld is a film series.
Underworld (2003 film) . The film was followed by Underworld : Evolution , released three years later , and by three other films . Underworld (film series) . The second film , Underworld : Evolution , was released in 2006 . The third film , Underworld : Rise of the Lycans , is the prequel to the series , chronicling the origins of the vampire-lycan war ( it was released on January 23 , 2009 ) .