Games like Project Vostok: Episode 1
Games like Project Vostok: Episode 1 include Tiny Bunny, NEEDY STREAMER OVERLOAD, Doki Doki Literature Club Plus!, No, I'm not a Human, and The NOexistenceN of you AND me. We matched them by the tags players give Project Vostok: Episode 1 on Steam (Visual Novel, Horror, Indie, Anime, and Psychological Horror): closest matches first, and among equally close ones the better-known games.

Tiny Bunny
Shared: Visual Novel · Horror · Psychological Horror

NEEDY STREAMER OVERLOAD
Shared: Visual Novel · Anime · Psychological Horror

Doki Doki Literature Club Plus!
Shared: Visual Novel · Psychological Horror · Anime

No, I'm not a Human
Shared: Horror · Indie · Psychological Horror

The NOexistenceN of you AND me
Shared: Visual Novel · Psychological Horror · Anime

Outlast
Shared: Horror · Survival Horror · Psychological Horror

MiSide
Shared: Psychological Horror · Horror · Anime

The Hungry Lamb: Traveling in the Late Ming Dynasty
Shared: Visual Novel · Dark · Interactive Fiction

Outlast 2
Shared: Horror · Psychological Horror · Survival Horror

Milk inside a bag of milk inside a bag of milk
Shared: Visual Novel · Horror · Psychological Horror

The Song of Saya
Shared: Visual Novel · Psychological Horror · Horror

Slay the Princess — The Pristine Cut
Shared: Visual Novel · Horror · Psychological Horror

SOMA
Shared: Horror · Psychological Horror · Survival Horror

Sally Face - Episode One
Shared: Indie · Horror · Psychological Horror

Little Misfortune
Shared: Indie · Psychological Horror · Horror

The Letter - Horror Visual Novel
Shared: Visual Novel · Horror · Indie

Corpse Party
Shared: Horror · Anime · Visual Novel

Mad Father
Shared: Horror · Anime · Psychological Horror

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

Raging Loop
Shared: Visual Novel · Indie · Psychological Horror

YOU and ME and HER: A Love Story
Shared: Visual Novel · Psychological Horror · Anime

Poppy Playtime
Shared: Horror · Survival Horror · Psychological Horror

DEVOUR
Shared: Horror · Survival Horror · Psychological Horror

Firework
Shared: Horror · Indie · Visual Novel