Greyhill Incident is a narrative survival horror game set against the backdrop of a classic alien invasion scenario in the early 90s. Taking the place of Ryan Baker, armed with only a baseball bat and a handful of revolver bullets, users navigate the creepy streets of Grayhill, now under siege by UFOs and the mysterious Gray Aliens. As the story progresses, gamers find themselves in a world of increasing paranormal activity, and a close-knit community struggles with fear and suspicion.

The atmosphere is tense as residents become increasingly skeptical of official explanations, convinced that there is more to the story than meets the eye. Trust is undermined, causing the residents of Grayhill to be reluctant to seek help from the authorities, preferring instead to fortify their homes and establish surveillance of the area. On this dangerous journey, you take on the role of Ryan Baker, an ordinary man armed with few resources – a trusty baseball bat and a few bullets for his revolver.

The mission is to travel through the vastness of Greyhill, risking encounters with other survivors, digging up important items and solving complex puzzles. Every step forward is a battle for survival, a fight against the invading forces that threaten to take over the surrounding area. Once familiar streets have now become home to an otherworldly threat. UFOs loom ominously in the sky, and houses and barns conceal secrets waiting to be solved. Amidst the chaos, you have to act carefully, putting together the fragments of the Alien Conspiracy that destroyed the lives of the town's residents.