Games like The Outer Side
Games like The Outer Side include Poppy Playtime, Bendy and the Ink Machine, Little Nightmares II, Garten of Banban, and Little Nightmares. We matched them by the tags players give The Outer Side on Steam (Horror, First-Person, Singleplayer, Puzzle, and Adventure): closest matches first, and among equally close ones the better-known games.

Poppy Playtime
Shared: Horror · Singleplayer · First-Person

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

Little Nightmares II
Shared: Horror · Singleplayer · Adventure

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

Little Nightmares
Shared: Horror · Singleplayer · Adventure

Bendy and the Dark Revival
Shared: Horror · First-Person · Singleplayer

Outlast
Shared: Horror · First-Person · Singleplayer

Buckshot Roulette
Shared: Horror · First-Person · Dark

Garten of Banban 2
Shared: Horror · First-Person · Singleplayer

Outlast 2
Shared: Horror · First-Person · Singleplayer

Garten of Banban 3
Shared: Horror · First-Person · Singleplayer

Amnesia: The Dark Descent
Shared: Horror · First-Person · Puzzle

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

MiSide
Shared: Horror · First-Person · Psychological Horror

Garten of Banban 8: Anti Devil
Shared: Horror · First-Person · Singleplayer

Garten of Banban 7
Shared: Horror · First-Person · Singleplayer

SOMA
Shared: Horror · Psychological Horror · Dark

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

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

Garten of Banban 4
Shared: Horror · First-Person · Singleplayer

IMSCARED
Shared: Horror · First-Person · Singleplayer

Portal 2
Shared: Singleplayer · First-Person · Puzzle

LIMBO
Shared: Puzzle · Dark · Horror

Escape the Backrooms
Shared: Horror · First-Person · Psychological Horror