Paranoia 2: Savior is a free-to-play Action/FPS/Horror PC game for Windows OS based on «Xash3D» engine. It’s a sequel to 2007s «PARANOIA» mod which was itself based on GoldSrc engine. The «P2S» grew so big that it became a standalone game, and is no longer considered a mod.
We remind you that in first “Paranoia” (HLM), the player, as the “Alpha” team’s fighter executes various combat missions to eliminate the terrorists and protect civilians at industrial complex “Ударник” (Udarnik, aka shock-worker). As a consequence he learns the existence of a secret underground research facility “КРОТ” (KROT, aka mole) and faces its inhabitants and secrets.