Games like Cosyland: Island Simulator
Games like Cosyland: Island Simulator include Stardew Valley, My Time at Portia, Coral Island, DAVE THE DIVER, and I Am Future: Cozy Apocalypse Survival. We matched them by the tags players give Cosyland: Island Simulator on Steam (Simulation, Casual, RPG, Open World, and Farming Sim): closest matches first, and among equally close ones the better-known games.

Stardew Valley
Shared: Farming Sim · RPG · Simulation

My Time at Portia
Shared: RPG · Open World · Simulation

Coral Island
Shared: Simulation · Farming Sim · RPG

DAVE THE DIVER
Shared: Casual · Adventure · Relaxing

I Am Future: Cozy Apocalypse Survival
Shared: Casual · RPG · Simulation

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

Luma Island
Shared: Casual · Simulation · Farming Sim

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

Infinity Nikki
Shared: Casual · Open World · RPG

Littlewood
Shared: Simulation · RPG · Relaxing

Slime Rancher 2
Shared: Open World · Relaxing · Simulation

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

Starsand Island
Shared: RPG · Casual · Farming Sim

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

STORY OF SEASONS: Friends of Mineral Town
Shared: Simulation · Casual · Farming Sim

Paralives
Shared: Simulation · Open World · Building

Gas Station Simulator
Shared: Simulation · Casual · Building

House Flipper
Shared: Simulation · Casual · Building

Disney Dreamlight Valley
Shared: Simulation · Relaxing · Casual

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

The Sims™ 3
Shared: Simulation · Casual · Building

Cities: Skylines II
Shared: Simulation · Building · City Builder

Sun Haven
Shared: Farming Sim · RPG · Simulation

Clanfolk
Shared: Farming Sim · RPG · Simulation