Fox Engine

The Fox Engine is a cross-platform game engine built from the ground-up by Hideo Kojima for games developed by Kojima Productions. The engine was revealed at the Konami pre E3 press conference on June 3, 2011. The engine's development began after the completion of Metal Gear Solid 4 with the goal of making the "best engine in the world".

The engine will make it possible for Kojima Productions to develop multi-platform games with a significantly shortened development time and has been described as the the first step for the developer to move away from development for a single platform.

A demo of the engine was shown at the same event. Taking place in a jungle environment, the demo showed off the engine's visual capabilities and featured a young man running around, a horse and a dog. The demo was not a game that will be released but instead a test area for the development of the engine. Kojima Productions will use the engine for all future titles, including a yet to be announced game made by Hideo Kojima.