Games like ReHarmony
Games like ReHarmony include The Last Campfire, Donut County, Stray, Slime Rancher 2, and A Story About My Uncle. We matched them by the tags players give ReHarmony on Steam (Runner, Casual, Puzzle, Parkour, and Adventure): closest matches first, and among equally close ones the better-known games.

The Last Campfire
Shared: Puzzle · Adventure · Cute

Donut County
Shared: Casual · Puzzle · Cute

Stray
Shared: Adventure · Puzzle · Atmospheric

Slime Rancher 2
Shared: Cute · Casual · Adventure

A Story About My Uncle
Shared: Adventure · Parkour · Puzzle

Pikuniku
Shared: Casual · Puzzle · Adventure

Chants of Sennaar
Shared: Puzzle · Adventure · Colorful

Moncage
Shared: Casual · Puzzle · Adventure

My Little Puppy
Shared: Adventure · Cute · Colorful

Monument Valley
Shared: Puzzle · Casual · Adventure

Slime Rancher
Shared: Adventure · Cute · Casual

Carto
Shared: Puzzle · Cute · Adventure

OneShot
Shared: Puzzle · Cute · Indie

Brothers - A Tale of Two Sons
Shared: Adventure · Puzzle · Atmospheric

Spirit of the North
Shared: Puzzle · Casual · Adventure

VHOLUME
Shared: Parkour · Runner · Casual

We Were Here Expeditions: The FriendShip
Shared: Puzzle · Casual · Adventure

Sizeable
Shared: Casual · Puzzle · 3D

The Room
Shared: Puzzle · Adventure · Atmospheric

Unpacking
Shared: Casual · Puzzle · Cute

COCOON
Shared: Puzzle · Adventure · 3D

Gorogoa
Shared: Puzzle · Casual · Indie

Is This Seat Taken?
Shared: Casual · Puzzle · Cute

Boxes: Lost Fragments
Shared: Puzzle · Casual · Adventure