Games like Mental Medicine
Games like Mental Medicine include Stray, Slime Rancher, MiSide, The Last Campfire, and OneShot. We matched them by the tags players give Mental Medicine on Steam (Simulation, Adventure, 2D, Cute, and Anime): closest matches first, and among equally close ones the better-known games.

Stray
Shared: Adventure · Cute · Singleplayer

Slime Rancher
Shared: Adventure · Cute · Singleplayer

MiSide
Shared: Cute · Singleplayer · Anime

The Last Campfire
Shared: Adventure · Cute · Puzzle

OneShot
Shared: Cute · Adventure · Singleplayer

Marco & The Galaxy Dragon
Shared: Adventure · Anime · Simulation

Village in the Shade
Shared: Simulation · Adventure · 2D

Slime Rancher 2
Shared: Cute · Adventure · Simulation

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

Papers, Please
Shared: Simulation · Singleplayer · 2D

NEEDY STREAMER OVERLOAD
Shared: Anime · Cute · 2D

Ori and the Will of the Wisps
Shared: Adventure · Singleplayer · Cute

Higurashi When They Cry Hou - Ch.1 Onikakushi
Shared: Anime · Adventure · Cute

Yunyun Syndrome!? Rhythm Psychosis
Shared: Cute · Anime · Adventure

鬼谷八荒 Tale of Immortal
Shared: Simulation · Singleplayer · Adventure

Changed
Shared: Cute · Adventure · Singleplayer

Finding Paradise
Shared: Adventure · 2D · Singleplayer

LIMBO
Shared: 2D · Adventure · Puzzle

Muse Dash
Shared: Cute · Anime · 2D

Scribblenauts Unlimited
Shared: Adventure · 2D · Puzzle

Valiant Hearts: The Great War™ / Soldats Inconnus : Mémoires de la Grande Guerre™
Shared: Adventure · 2D · Atmospheric

Lucy -The Eternity She Wished For-
Shared: Anime · Cute · Simulation

Hollow Knight
Shared: 2D · Adventure · Singleplayer

The Escapists
Shared: Simulation · 2D · Singleplayer