Games like Circadian City
Games like Circadian City include Stardew Valley, My Time at Portia, Coral Island, Fields of Mistria, and Clanfolk. We matched them by the tags players give Circadian City on Steam (Life Sim, RPG, Pixel Graphics, Farming Sim, and Agriculture): closest matches first, and among equally close ones the better-known games.

Stardew Valley
Shared: Pixel Graphics · Life Sim · Farming Sim

My Time at Portia
Shared: Life Sim · RPG · Farming Sim

Coral Island
Shared: Life Sim · Farming Sim · RPG

Fields of Mistria
Shared: Farming Sim · Pixel Graphics · RPG

Clanfolk
Shared: Life Sim · Pixel Graphics · Farming Sim

Sun Haven
Shared: Pixel Graphics · Life Sim · Farming Sim

Littlewood
Shared: Life Sim · Pixel Graphics · RPG

Graveyard Keeper
Shared: Pixel Graphics · RPG · Simulation

Dinkum
Shared: Agriculture · Life Sim · Farming Sim

DAVE THE DIVER
Shared: Pixel Graphics · Relaxing · RPG

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

Travellers Rest
Shared: Life Sim · Pixel Graphics · RPG

Starsand Island
Shared: Life Sim · RPG · Farming Sim

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

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

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

Roots of Pacha
Shared: Life Sim · Pixel Graphics · Farming Sim

Disney Dreamlight Valley
Shared: Life Sim · Relaxing · Simulation

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

The Sims™ 4
Shared: Life Sim · Simulation · Building

Forager
Shared: Pixel Graphics · Farming Sim · Crafting

Terraria
Shared: Pixel Graphics · Sandbox · Crafting

Palia
Shared: Life Sim · Farming Sim · Crafting

Little Witch in the Woods
Shared: Pixel Graphics · Life Sim · RPG