DOOM on the Beam (vividworlds.dev)

doom1.wad
  DOOM, the shareware episode (Knee-Deep in the Dead), version 1.9, by id Software, 1993.
  MD5 f0cefca49926d00903cf57551d901abe. Distributed unmodified, as id Software allows for the
  shareware episode. DOOM is a trademark of id Software; this site is not affiliated with it.

doom.wasm
  doomgeneric, the portable DOOM engine (GNU GPL version 2, see COPYING.txt):
    https://github.com/ozkl/doomgeneric
  compiled to WebAssembly by pi-doom 0.1.2 (GNU GPL version 2), whose build script and platform
  file are the rest of the source:
    https://github.com/badlogic/pi-doom/tree/8257577c48 (doom/build.sh, doom/doomgeneric_pi.c)
  The JavaScript glue that loads it is src/games/doomgeneric.js of this site, the pi-doom glue
  with four marked changes so it runs in a browser.