As of June 2021, the company employs 360 people[1] under the leadership of joint studio directors Jan-Bart van Beek, Joel Eschler and Hella Schmidt.

[5][7] Hermen Hulst was hired from a consulting firm to replace de Ronde as managing director the following year.

[6][10][12] Shortly thereafter, in July 2003, Lost Boys Games was renamed Guerrilla to reflect the style of its new parent company.

[14] Both titles would be released the following year to mixed reception, however Killzone enjoyed pre-release hype and anticipation, and despite some backfire effect due to the media hype, Killzone went on to sell over a million copies worldwide, earning Greatest Hits and Platinum status in North America and Europe respectively.

[21] As of June 2018, Guerrilla employs 250 people in its Amsterdam offices; it planned to move into a new building on Nieuwezijds Voorburgwal in early 2019 and expand to at least 400 employees in this new location.

[23] During the 2015 E3 conference, Guerrilla unveiled a new intellectual property, Horizon Zero Dawn described as a "post-apocalyptic open world action role-playing game that follows the story of Aloy, a young huntress who inhabits a world that is overrun by machines, and attempts to journey across several lands to uncover her past.

[29] In March 2020, Hermen Hulst confirmed in an interview that Horizon Zero Dawn would receive a PC port.

In December 2022, Sony announced that an expansion for Horizon Forbidden West named Burning Shores will be releasing on 19 April 2023 on the PlayStation 5.

In April 2023, Guerrilla Games announced that the studio's technical director Michiel van der Leeuw would be focusing on the development of the engine.