3 Jedi engine is an old (1995) [proprietary](proprietary.md)/closed source ["2.5D"/"Pseudo3D"/primitive3D](pseudo3d.md) [game engine](game_engine.md) best known for being used in games Star Wars: Dark Forces and Outlaws. It was mostly notable for its at the time advanced 3D rendering that was similar to previously released [Doom](doom.md) but yet a bit slightly improved, e.g. by adding features like room-above-room and fake looking up/down. There is a "modern" [FOSS](foss.md) rewrite of the engine using "true 3D" and [GPU](gpu.md) accelerated rendering, called the *Force engine*; the original Jedi engine's source code isn't available so its internal working is not known exactly; some suspected the developers to have reverse engineer the Doom engine and copied how it worked, however work on the Jedi engine began before Doom was released and the Jedi engine seems to work on the principle of [portal rendering](portal_rendering.md) (technique used in [Duke Nukem](duke3d.md)'s Build engine), unlike Doom which used [BSP](bsp.md) rendering. { This seems to be confirmed by the Force engine's dev on his blog and by one Russian video on YouTube. ~drummyfish }