This map requires LibreQuake, obviously.

This map started as a remake of saturn quake's titlemap, eventually turning into a canditate for LibreQuake's introductory map.
I reccomend using the official LibreQuake compiling script.
If you're using the script provided, paste your source map into lq1/maps/src and use these flags:
LQ_BSP_FLAGS="-transwater -splitturb"
LQ_VIS_FLAGS="-noambientsky"
LQ_LIG_FLAGS="-extra4 -bounce -dirt"
Copy the .bsp & .lit files from the .7z into your sourceport directory, on the lines of this(for linux):
~/.ironwail/lq1/maps
If you're not using ironwail, quakespasm should be the same deal except you'll have to open the console and type map start-imporved