Games like Unnamed Project
Games like Unnamed Project include The Stanley Parable, THE CORRIDOR, Before Your Eyes, Dr. Langeskov, The Tiger, and The Terribly Cursed Emerald: A Whirlwind Heist, and Jazzpunk: Director's Cut. We matched them by the tags players give Unnamed Project on Steam (Comedy, Singleplayer, Psychological, Walking Simulator, and Funny): closest matches first, and among equally close ones the better-known games.

The Stanley Parable
Shared: Comedy · Walking Simulator · Psychological

THE CORRIDOR
Shared: Comedy · Singleplayer · Psychological

Before Your Eyes
Shared: Singleplayer · Interactive Fiction · Walking Simulator

Dr. Langeskov, The Tiger, and The Terribly Cursed Emerald: A Whirlwind Heist
Shared: Comedy · Walking Simulator · Singleplayer

Jazzpunk: Director's Cut
Shared: Comedy · Funny · Singleplayer

Firewatch
Shared: Walking Simulator · Singleplayer · First-Person

Garry's Mod
Shared: Funny · Singleplayer · Casual

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

Psychonauts 2
Shared: Singleplayer · Comedy · Psychological

The Henry Stickmin Collection
Shared: Comedy · Funny · Singleplayer

WHAT THE GOLF?
Shared: Comedy · Funny · Singleplayer

Little Inferno
Shared: Singleplayer · Comedy · Casual

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

Goat Simulator
Shared: Comedy · Funny · Casual

Finding Paradise
Shared: Singleplayer · Funny · Psychological

Poker Night at the Inventory
Shared: Comedy · Funny · Casual

To the Moon
Shared: Singleplayer · Interactive Fiction · Indie

Trombone Champ
Shared: Comedy · Funny · Singleplayer

Slime Rancher
Shared: Singleplayer · Funny · First-Person

Psychonauts
Shared: Comedy · Singleplayer · Funny

CHUCHEL
Shared: Comedy · Funny · Casual

Donut County
Shared: Funny · Casual · Singleplayer

Portal
Shared: Singleplayer · Comedy · First-Person

South Park™: The Stick of Truth™
Shared: Comedy · Funny · Singleplayer