The PlayStation 4 and Xbox One versions of Tomb Raider: Definitive Edition were both developed by different studios, it's been revealed, which may go some way to explaining the performance differences between the two versions.

The news was tucked away in a note on Nixxes' website (highlighted by NeoGAF), which appears to have been published soon after the game's announcement last month.

"Nixxes Software is proud to announce that it has been working on the Playstation 4 version for the recent announced Tomb Raider: Definitive Edition," the developer wrote.

"In addition to converting the game to Playstation 4, Nixxes Software provided support to United Front Games, the developer responsible for the Xbox ONE version of the game."

Nixxes has plenty of experience in porting Square Enix's console titles to PC, having previously developed the PC versions of Tomb Raider, Hitman Absolution and Deus Ex: Human Revolution.

United Front Games, however, has less porting experience, with its development history limited to original titles. Before developing Tomb Raider: Definitive Edition, the developer created ModNation Racers, Sleeping Dogs and LittleBigPlanet Karting.

It was revealed yesterday that the PS4 version of Tomb Raider: Definitive Edition runs at 60fps, with the Xbox One reportedly rendering at just 30fps.

According to Square, though, "anything beyond 30fps for [Tomb Raider: Definitive Edition] is gravy".