Games like An Unfinished Game
Games like An Unfinished Game include The Stanley Parable, Portal, Portal 2, Firewatch, and Jazzpunk: Director's Cut. We matched them by the tags players give An Unfinished Game on Steam (Indie, Walking Simulator, Comedy, Game Development, and First-Person): closest matches first, and among equally close ones the better-known games.

The Stanley Parable
Shared: Indie · Comedy · Walking Simulator

Portal
Shared: First-Person · 3D Platformer · Comedy

Portal 2
Shared: Singleplayer · First-Person · Platformer

Firewatch
Shared: Walking Simulator · First-Person · Indie

Jazzpunk: Director's Cut
Shared: Indie · Comedy · First-Person

THE CORRIDOR
Shared: Comedy · Walking Simulator · Singleplayer

Garry's Mod
Shared: First-Person · Funny · Singleplayer

Octodad: Dadliest Catch
Shared: Comedy · Indie · Walking Simulator

PEAK
Shared: Comedy · First-Person · Indie

Goat Simulator
Shared: Comedy · Funny · Indie

Supraland
Shared: First-Person · Puzzle Platformer · Singleplayer

A Story About My Uncle
Shared: Indie · First-Person · Singleplayer

Getting Over It with Bennett Foddy
Shared: Singleplayer · Indie · Funny

Psychonauts
Shared: Comedy · Singleplayer · Platformer

There Is No Game: Wrong Dimension
Shared: Indie · Comedy · Funny

RV There Yet?
Shared: Funny · Indie · First-Person

A Hat in Time
Shared: 3D Platformer · Indie · Funny

Baby Steps
Shared: Walking Simulator · Comedy · Funny

The Beginner's Guide
Shared: Walking Simulator · Indie · First-Person

Totally Accurate Battle Simulator
Shared: Indie · Funny · Singleplayer

WHAT THE GOLF?
Shared: Comedy · Indie · Funny

Human Fall Flat
Shared: Funny · Indie · Puzzle Platformer

Clustertruck
Shared: First-Person · Indie · 3D Platformer

Quantum Conundrum
Shared: First-Person · Comedy · 3D Platformer