I dag er det få utviklere som overlever uten et stor utgiver i ryggen, og det gjelder også Guerrilla, som nå vil bli en viktig del av Sonys spillavdeling. Sony har nemlig nettopp kjøpt den dyktige utvikleren som bl.a. står bak Killzone og Shellshock.
Phil Harrison hadde følgende kommentar til oppkjøpet:
"This strategic alliance with one of Europe's hottest new creative and technical talents shows our determination to only work with the best, whether they are our in-house or not. Killzone not only is a very important title for us but is also a great example of what can be done when a publisher and a developer partner closely together on a project. The results shout for themselves, and I am delighted that our production and creative teams can work even more closely with Guerrilla going forward."
I tiden som kommer vil Guerilla utelukkende produsere spill til Sonys PlayStation 2 og den kommende PSP maskinen. Hermen Hulst hos Guerilla hadde følgende kommentar:
"We have enjoyed an excellent working relationship with SCEE throughout the development of Killzone and are extremely pleased to be extending this partnership. We are looking forward to working exclusively with SCEE, applying our talent and technology to new platforms in order to establish Guerrilla as one of the finest development studios in Europe."