SIREN - Doom Sci Fi Horror

Siren is a very promising DOOM total conversion mod 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.

Get it here

https://forum.zdoom.org/viewtopic.php?f=19&t=68686&sid=2a42c7043f45befb328bb89df22c1a3b