Jedi Engine

   Jedi engine is an old (1995) [1]proprietary/closed source
   [2]"2.5D"/"Pseudo3D"/primitive3D [3]game engine 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
   [4]Doom but yet a bit slightly improved, e.g. by adding features like
   room-above-room and fake looking up/down. There is a "modern" [5]FOSS
   rewrite of the engine using "true 3D" and [6]GPU 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 [7]portal rendering
   (technique used in [8]Duke Nukem's Build engine), unlike Doom which used
   [9]BSP rendering. { This seems to be confirmed by the Force engine's dev
   on his blog and by one Russian video on YouTube. ~drummyfish }

Links:
1. proprietary.md
2. pseudo3d.md
3. game_engine.md
4. doom.md
5. foss.md
6. gpu.md
7. portal_rendering.md
8. duke3d.md
9. bsp.md