Guerrilla is the result of a merger between three Dutch video game studios: Orange Games, Digital Infinity, and Formula Game Development. Orange Games was founded in 1993 by Arjan Brussee, the co-designer of the 1994 game "Jazz Jackrabbit"; Digital Infinity was founded by Arnout van der Kamp in 1995; and Formula was founded by Martin de Ronde in 1998 and sold to Lost Boys (a multimedia conglomerate company owned by Michiel Mol) in 1999. The three studios merged, forming Lost Boys Games as a subsidiary of Lost Boys on 1 January 2000. With de Ronde as managing director, the new company employed 25 people, growing to 40 by November 2000. Hermen Hulst was hired from a consulting firm to replace de Ronde as managing director the following year. In 2001, when Lost Boys merged with Swedish media company IconMediaLab, Lost Boys Games was spun off into an independent entity, though under the continued ownership of Mol.