Update

doom.md

@@ -21,6 +21,7 @@ Doom was followed by Doom II in 1995, which "content-wise" was basically just a
 Some **[interesting](interesting.md) things** about Doom:
 
 - Someone created a Doom system monitor for [Unix](unix.md) systems called [psDooM](psdoom.md) where the monsters in game are the operating system [processes](process.md) and killing the monsters kills the processes.
+- In 2024 some researchers made an experimental completely [neural network](neural_net.md) [AI](ai.md) game engine (called GameNGen) and implemented Doom with it -- basically they just made the network play Doom for a long time and so trained it to estimate the next frame from current input and a few previous frames. It can be played at 20+ FPS and looks a lot like Doom but it's also "weird", glitching, and having little persistence (it only remembers a few seconds back). Still pretty impressive.
 - Someone (kgsws) has been [hacking](hacking.md) the ORIGINAL Doom engine in an impressive way WITHOUT modifying the source code or the binary, rather using [arbitrary code execution](arbitrary_code_execution.md) bug; he added very advanced features known from newer source ports, for example an improved 3D rendering algorithms allowing geometry above geometry etc. (see e.g. https://yt.artemislena.eu/watch?v=RdbRPNPUWlU). It's called the Ace engine.
 - Doom sprites were made from photos of physical things: weapons are modified photos of toys, enemies were made from clay and then photographed from multiple angles (actually a great alternative to [3D modeling](3d_model.md) that's less dependent on computers and produces more realistic results).
 - The strongest weapon in the game is name BFG9000, which stands for "big fucking gun".
@@ -56,3 +57,4 @@ There is no [antialiasing](antialiasing.md) in the engine, i.e. aliasing can be
 - [Build engine](build_engine.md)
 - [Chasm: The Rift](chasm_the_rift.md)
 - [raycasting](raycasting.md)
+- [Doomer](doomer.md)