Games like Pacifist Outside
Games like Pacifist Outside include SANABI, Celeste, Owlboy, LIMBO, and INSIDE. We matched them by the tags players give Pacifist Outside on Steam (Adventure, Action-Adventure, Platformer, 2D Platformer, and Puzzle Platformer): closest matches first, and among equally close ones the better-known games.

SANABI
Shared: Adventure · Pixel Graphics · 2D Platformer

Celeste
Shared: Platformer · Pixel Graphics · 2D Platformer

Owlboy
Shared: Adventure · Platformer · Pixel Graphics

LIMBO
Shared: Puzzle Platformer · Platformer · Adventure

INSIDE
Shared: Puzzle Platformer · Atmospheric · Adventure

Hollow Knight
Shared: Platformer · 2D · Adventure

ANIMAL WELL
Shared: Platformer · Puzzle Platformer · Pixel Graphics

Rain World
Shared: Platformer · Atmospheric · Pixel Graphics

Neva
Shared: Adventure · Platformer · Atmospheric

Webbed
Shared: 2D Platformer · Puzzle Platformer · Pixel Graphics

Trine 2: Complete Story
Shared: Action-Adventure · Platformer · Puzzle Platformer

FEZ
Shared: Platformer · Adventure · Pixel Graphics

Trine Enchanted Edition
Shared: Action-Adventure · Puzzle Platformer · 2D Platformer

GRIS
Shared: Adventure · Atmospheric · Platformer

Ori and the Will of the Wisps
Shared: Platformer · Adventure · Action-Adventure

INMOST
Shared: Adventure · Pixel Graphics · Puzzle Platformer

Creepy Tale
Shared: Adventure · Puzzle Platformer · 2D Platformer

Portal 2
Shared: Platformer · Puzzle Platformer · Action-Adventure

Little Nightmares
Shared: Adventure · Puzzle Platformer · Atmospheric

MO:Astray
Shared: Adventure · Platformer · Puzzle Platformer

Little Nightmares II
Shared: Adventure · Atmospheric · Action-Adventure

Dead Cells
Shared: Adventure · 2D · Pixel Graphics

Katana ZERO
Shared: Platformer · Pixel Graphics · 2D Platformer

Mina the Hollower
Shared: Action-Adventure · 2D Platformer · Platformer

