Games like Drunk Alien
Games like Drunk Alien include A Hat in Time, Ratchet & Clank: Rift Apart, Getting Over It with Bennett Foddy, Slime Rancher, and Chained Together. We matched them by the tags players give Drunk Alien on Steam (Adventure, Psychological Horror, Dark Comedy, Singleplayer, and Third Person): closest matches first, and among equally close ones the better-known games.

A Hat in Time
Shared: Cute · Adventure · 3D Platformer

Ratchet & Clank: Rift Apart
Shared: Adventure · Singleplayer · Third Person

Getting Over It with Bennett Foddy
Shared: Psychological Horror · Singleplayer · Funny

Slime Rancher
Shared: Adventure · Cute · Singleplayer

Chained Together
Shared: Adventure · 3D Platformer · Third Person

Psychonauts
Shared: Adventure · Singleplayer · Comedy

Get To Work
Shared: Adventure · Singleplayer · Third Person

Outcore: Desktop Adventure
Shared: Psychological Horror · Adventure · Comedy

MiSide
Shared: Psychological Horror · Cute · Singleplayer

I Am Bread
Shared: Adventure · Singleplayer · Funny

PRAGMATA
Shared: Adventure · Cute · Singleplayer

Sonic Frontiers
Shared: Adventure · Singleplayer · 3D Platformer

Portal 2
Shared: Singleplayer · Adventure · 3D Platformer

Psychonauts 2
Shared: Singleplayer · Adventure · 3D Platformer

Tinykin
Shared: Cute · 3D Platformer · Adventure

Little Misfortune
Shared: Psychological Horror · Adventure · Singleplayer

Kao the Kangaroo: Round 2 (2003 re-release)
Shared: Adventure · Singleplayer · 3D Platformer

A Difficult Game About Climbing
Shared: Psychological Horror · Adventure · Singleplayer

Pumpkin Jack
Shared: Adventure · 3D Platformer · Third Person

Tomb Raider Game of the Year
Shared: Adventure · Singleplayer · Third Person

Totally Accurate Battle Simulator
Shared: Singleplayer · Adventure · Funny

Donut County
Shared: Adventure · Cute · Funny

Rise of the Tomb Raider™
Shared: Adventure · Singleplayer · Third Person

Stray
Shared: Adventure · Singleplayer · Cute