Siren is a very promising DOOM total conversion mod game that draws inspiration from Aliens as you blast your way through a top secret facility that’s overrun with aliens, zombies and an unkillable black cloud called the Siren.
Please continue with the following description in alphabetagamer
Here´s gameplay video by Alpha Beta Gamer
Note – You will need an official DOOM 2 .WAD file and GZDoom to play this mod (so you need to own a copy of DOOM 2). Once unzipped, copy the DOOM 2 .WAD file and the Siren .pk3 file into the GZDoom folder. Then select the .pk3 file and drag it on-top of the GZDoom.exe to start the game (you’ll probably want to customize your controls before you start playing).