Games like Out of Bounds
Games like Out of Bounds include Portal 2, Portal, Neon White, Aimlabs, and Half-Life 2. We matched them by the tags players give Out of Bounds on Steam (Action, Platformer, Puzzle, Shooter, and 3D Platformer): closest matches first, and among equally close ones the better-known games.

Portal 2
Shared: Platformer · Puzzle · Puzzle Platformer

Portal
Shared: Puzzle · 3D Platformer · Puzzle Platformer

Neon White
Shared: Platformer · 3D Platformer · Action

Aimlabs
Shared: Action · Shooter · FPS

Half-Life 2
Shared: Action · FPS · Shooter

VLADiK BRUTAL
Shared: Action · Shooter · FPS

BioShock Infinite
Shared: Action · Shooter · FPS

SUPERHOT
Shared: Action · FPS · Shooter

KovaaK's
Shared: Action · Shooter · FPS

Supraland
Shared: Puzzle Platformer · Puzzle · FPS

PUBG: BATTLEGROUNDS
Shared: Shooter · Action · FPS

Black Mesa
Shared: Action · FPS · Shooter

DeadCore
Shared: Action · Platformer · FPS

Planet of Lana
Shared: Action · Puzzle · Puzzle Platformer

Atomic Heart
Shared: Action · FPS · Puzzle

Pumpkin Jack
Shared: Action · 3D Platformer · Platformer

Defy Gravity Extended
Shared: Platformer · Puzzle · Puzzle Platformer

LIMBO
Shared: Puzzle · Platformer · Puzzle Platformer

Call of Duty®
Shared: Action · Shooter · FPS

EDGE
Shared: Puzzle · Action · Platformer

Pikuniku
Shared: Puzzle · Action · Platformer

BONEWORKS
Shared: Action · Shooter · Puzzle

Apex Legends™
Shared: Shooter · Action · FPS

Far Cry 3
Shared: Action · FPS · Shooter