Games like My Time at Portia
Games like My Time at Portia include Stardew Valley, Coral Island, My Time at Sandrock, I Am Future: Cozy Apocalypse Survival, and Farmer's Dynasty - Final Harvest Edition. We matched them by the tags players give My Time at Portia on Steam (Life Sim, RPG, Open World, Farming Sim, and Crafting): closest matches first, and among equally close ones the better-known games.

Stardew Valley
Shared: Life Sim · Farming Sim · RPG

Coral Island
Shared: Life Sim · Farming Sim · RPG

My Time at Sandrock
Shared: Life Sim · Farming Sim · Crafting

I Am Future: Cozy Apocalypse Survival
Shared: RPG · Farming Sim · Casual

Farmer's Dynasty - Final Harvest Edition
Shared: Life Sim · RPG · Farming Sim

Starsand Island
Shared: Life Sim · RPG · Farming Sim

Dinkum
Shared: Life Sim · Farming Sim · Crafting

Clanfolk
Shared: Life Sim · Farming Sim · RPG

Littlewood
Shared: Life Sim · RPG · Simulation

Sun Haven
Shared: Life Sim · Farming Sim · RPG

Infinity Nikki
Shared: Open World · RPG · Casual

No Place Like Home
Shared: RPG · Farming Sim · Life Sim

Rust
Shared: Open World · Crafting · Building

Disney Dreamlight Valley
Shared: Life Sim · Simulation · Adventure

Potion Craft: Alchemist Simulator
Shared: Crafting · Simulation · Singleplayer

Fields of Mistria
Shared: Farming Sim · RPG · Life Sim

Palia
Shared: Life Sim · Farming Sim · Crafting

Luma Island
Shared: Farming Sim · Crafting · Simulation

The Forest
Shared: Open World · Crafting · Adventure

Conan Exiles Enhanced
Shared: Open World · Crafting · RPG

Graveyard Keeper
Shared: RPG · Crafting · Simulation

The Scroll of Taiwu : Beyond The Dome
Shared: RPG · Open World · Singleplayer

The Sims™ 3
Shared: Life Sim · Simulation · Casual

Paralives
Shared: Life Sim · Open World · Simulation