This is dissasembled source code for my MS-DOS intro made in 1999 for Analogue party but finnaly showed at Riverwash in 2016 ;) I am going to port it to Windows when I finnaly find some spare time :)

https://www.pouet.net/prod.php?which=68094

ps. yes, this is raltime ray-tracing not ray-marching ;) rendered in true color and dithered to 8-bit palete mode