Games like Breath
Games like Breath include Cyber Manhunt, Mountain, Chinese Parents, Stardew Valley, and Emily is Away Too. We matched them by the tags players give Breath on Steam (Indie, Casual, RPG, Simulation, and Walking Simulator): closest matches first, and among equally close ones the better-known games.

Cyber Manhunt
Shared: RPG · Simulation · Indie

Mountain
Shared: Indie · Casual · Simulation

Chinese Parents
Shared: Casual · Simulation · Indie

Stardew Valley
Shared: RPG · Simulation · Indie

Emily is Away Too
Shared: Indie · Simulation · Casual

The Scroll of Taiwu : Beyond The Dome
Shared: RPG · Indie · Simulation

Everything
Shared: Casual · Indie · Simulation

Plague Inc: Evolved
Shared: Indie · Simulation · Casual

Papers, Please
Shared: Indie · Simulation · Singleplayer

[Chillas Art] The Convenience Store
Shared: Indie · Casual · Simulation

My Time at Portia
Shared: RPG · Casual · Simulation

Game Dev Tycoon
Shared: Indie · Simulation · Casual

Home Behind
Shared: RPG · Indie · Casual

The Beginner's Guide
Shared: Indie · Walking Simulator · Atmospheric

Retirement Simulator
Shared: Indie · RPG · Simulation

Touhou Mystia's Izakaya
Shared: Casual · RPG · Simulation

House Flipper
Shared: Simulation · Casual · Indie

Streamer Life Simulator 2
Shared: Simulation · Casual · Immersive Sim

Potion Craft: Alchemist Simulator
Shared: Simulation · Indie · Casual

Pretty Neko
Shared: Indie · Casual · Simulation

Prison Simulator
Shared: Casual · RPG · Simulation

Treasure Hunter Simulator
Shared: Indie · Simulation · Casual

The Stanley Parable
Shared: Indie · Walking Simulator · Psychological

Melvor Idle
Shared: Casual · RPG · Indie