Games like The Greys: Human Abductions
Games like The Greys: Human Abductions include SOMA, What Remains of Edith Finch, Lethal Company, Firewatch, and Outer Wilds. We matched them by the tags players give The Greys: Human Abductions on Steam (Horror, Aliens, First-Person, Exploration, and Sci-fi): closest matches first, and among equally close ones the better-known games.

SOMA
Shared: Horror · Sci-fi · Psychological Horror

What Remains of Edith Finch
Shared: First-Person · Exploration · Walking Simulator

Lethal Company
Shared: Horror · First-Person · Exploration

Firewatch
Shared: First-Person · Exploration · Walking Simulator

Outer Wilds
Shared: Exploration · Story Rich · Puzzle

Layers of Fear (2016)
Shared: Horror · First-Person · Psychological Horror

Poppy Playtime
Shared: Horror · First-Person · Singleplayer

ROUTINE
Shared: Sci-fi · Singleplayer · Horror

Amnesia: A Machine For Pigs
Shared: Horror · First-Person · Walking Simulator

Still Wakes the Deep
Shared: Horror · First-Person · Psychological Horror

Prey
Shared: Horror · Sci-fi · Singleplayer

The Talos Principle
Shared: First-Person · Puzzle · Sci-fi

Alien: Isolation
Shared: Horror · Aliens · Sci-fi

MiSide
Shared: Horror · First-Person · Psychological Horror

INFRA
Shared: Exploration · First-Person · Puzzle

Bendy and the Ink Machine
Shared: Horror · First-Person · Singleplayer

Subnautica
Shared: Horror · Exploration · Singleplayer

Outlast
Shared: Horror · First-Person · Singleplayer

Little Nightmares II
Shared: Horror · Singleplayer · Puzzle

Garten of Banban
Shared: Horror · First-Person · Singleplayer

Inside the Backrooms
Shared: Horror · Puzzle · Exploration

Amnesia: Rebirth
Shared: First-Person · Horror · Puzzle

Little Nightmares
Shared: Horror · Singleplayer · Puzzle

Sally Face - Episode One
Shared: Horror · Psychological Horror · Story Rich