Games like Pop Journey
Games like Pop Journey include Mirror 2: Project X, Unpacking, Chill with You : Lo-Fi Story, Assemble with Care, and Muse Dash. We matched them by the tags players give Pop Journey on Steam (Match 3, Female Protagonist, Character Customization, Anime, and Relaxing): closest matches first, and among equally close ones the better-known games.

Mirror 2: Project X
Shared: Match 3 · Female Protagonist · Anime

Unpacking
Shared: Relaxing · Casual · Cute

Chill with You : Lo-Fi Story
Shared: Relaxing · Anime · Casual

Assemble with Care
Shared: Casual · Female Protagonist · Relaxing

Muse Dash
Shared: Anime · Female Protagonist · Cute

Behind the Frame: The Finest Scenery
Shared: Female Protagonist · Relaxing · Anime

Slime Rancher 2
Shared: Relaxing · Cute · Singleplayer

Monument Valley
Shared: Relaxing · Puzzle · Female Protagonist

Marco & The Galaxy Dragon
Shared: Female Protagonist · Anime · Casual

Hatsune Miku: Project DIVA Mega Mix+
Shared: Anime · Female Protagonist · Cute

When The Past Was Around
Shared: Female Protagonist · Relaxing · Cute

The Sims™ 4
Shared: Character Customization · Relaxing · Singleplayer

Carto
Shared: Cute · Relaxing · Puzzle

Your Mother
Shared: Female Protagonist · Anime · Cute

Zuma Deluxe
Shared: Match 3 · Puzzle · Casual

Librarian: Tidy Up the Arcane Library!
Shared: Relaxing · Casual · Puzzle

your wife
Shared: Anime · Casual · Cute

LEGO® Builder's Journey
Shared: Relaxing · Cute · Casual

A Little to the Left
Shared: Relaxing · Puzzle · Casual

Bejeweled® 3
Shared: Match 3 · Casual · Puzzle

Volcano Princess
Shared: Female Protagonist · Anime · Cute

Purple Place - Classic Games
Shared: Casual · Puzzle · Retro

Calico
Shared: Casual · Cute · Character Customization

Disney Dreamlight Valley
Shared: Character Customization · Relaxing · Casual