ZERO PROTOCOL(steam key)(region free)

In this immersive first-person sci-fi thriller, you must uncover the secrets of the IAS Antarctic research facility and try to survive. Focus on Exploration: Pick door passwords, find terminal access cards, repair broken equipment, combine objects, and use your brain. No one will guide you through the story in this game; you'll have to explore everything on your own! Intense Combat: You have a weapon, but that doesn't mean you're safe. The enemies here are deadly, and not all of them can be killed... A Cold, Lonely Atmosphere: Graphics inspired by classic 3D games like Zero Tolerance, System Shock, and Half-Life, combined with atmospheric sound effects, make the game world even darker and more unwelcoming. Nonlinearity and Multiple Endings: Balance between clarity and madness, make conscious or unconscious decisions, and discover the consequences!