During a panel at PlayStation Experience, PS4 System Architect Mark Cerny talked at length about the technology partnership between Kojima Productions and Guerrilla Games, that is leading them to share Guerrilla's engine, Decima.

Interestingly, even Cerny can't yet guess just how far they'll manage to evolve the engine.

"I think what's notable about Guerrilla Games' technology, is that it's not just graphics technology. It's a great number of things. You design a world, you script AI for the enemies. It's a very deep and intuitive toolset.

I have absolutely no idea where it's going to end. The one thing we know, as games companies that work on technology, is that it's going to continue to evolve and get better. I could not hazard a gess as to where they're going to take it."

Cerny also explained that what started with a donation of Guerrilla Games' engine quickly evolved in a collaboration. Both Guerrilla and Kojima Productions work on the same code base, which is something Cerny never saw before. You can't actually distinguish who created which lines of code within the current build of the engine, even if most is still made by Guerrilla.

According to Cerny, the two studios are trying together to take game technology to the next level.

Cerny is actually the one who brought Hideo Kojima and Guerrilla Games together. The PS4 System Architect and Kojima-san traveled together for two weeks, visiting Sony's studios around the world, seeking the right partner.

They weren't just looking for the right technology, but also for a team that Kojima Productions could collaborate well with in term of approach to technology, corporate culture and more.

According to Cerny, as Kojima-san made lifelong friends at several studios, it was pretty clear that in term of collaboration, things would go smoothly with any number of studios, but the big unknown was still the engine, as most of the teams build their engines only for their own games, without setting them up to be used by others.

That's why Guerrilla Games proved to be a good fit. Both Guerrilla and Kojima Productions have a tremendous independence among the key people on their projects. There are real similarities between them that help the collaboration. It's not dictated from above, but it's really the teams working together.

If you want to see the first fruits of the collaboration, you can see Decima in action in the brand new trailer, and in a few in-engine images.