Games like The Last Cosmonaut
Games like The Last Cosmonaut include Five Nights at Freddy's: Security Breach, The Forest, Poppy Playtime, Escape the Backrooms, and Resident Evil 7 Biohazard. We matched them by the tags players give The Last Cosmonaut on Steam (Survival Horror, Pixel Graphics, Exploration, Action, and Puzzle): closest matches first, and among equally close ones the better-known games.

Five Nights at Freddy's: Security Breach
Shared: Survival Horror · Horror · Exploration

The Forest
Shared: Survival Horror · Adventure · Horror

Poppy Playtime
Shared: Survival Horror · Puzzle · Horror

Escape the Backrooms
Shared: Survival Horror · Horror · Exploration

Resident Evil 7 Biohazard
Shared: Survival Horror · Horror · First-Person

Resident Evil Requiem
Shared: Survival Horror · Action · Horror

Five Nights at Freddy's: Secret of the Mimic
Shared: Action · Adventure · Exploration

Inside the Backrooms
Shared: Survival Horror · Puzzle · Horror

Bendy and the Dark Revival
Shared: Survival Horror · Action · Horror

Resident Evil Village
Shared: Survival Horror · Action · First-Person

Lethal Company
Shared: Survival Horror · Exploration · First-Person

Five Nights at Freddy's: Into the Pit
Shared: Pixel Graphics · Exploration · Adventure

SILENT HILL: Townfall
Shared: Action · Survival Horror · Adventure

Outlast
Shared: Survival Horror · First-Person · Horror

Subnautica 2
Shared: Exploration · Survival Horror · Horror

The Beast Inside
Shared: Survival Horror · Adventure · Action

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

ANIMAL WELL
Shared: Exploration · Pixel Graphics · Puzzle

IMSCARED
Shared: Pixel Graphics · Horror · Adventure

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

Darkwood
Shared: Survival Horror · Action · Adventure

Resident Evil 2
Shared: Survival Horror · Action · Horror

Amnesia: The Dark Descent
Shared: Survival Horror · Puzzle · Horror

Portal 2
Shared: Puzzle · First-Person · Singleplayer