Games like Luma Island
Games like Luma Island include Palia, Stardew Valley, My Time at Portia, Hello Kitty Island Adventure, and Farm Together. We matched them by the tags players give Luma Island on Steam (Cozy, Farming Sim, Online Co-Op, Casual, and Simulation): closest matches first, and among equally close ones the better-known games.

Palia
Shared: Cozy · Farming Sim · Online Co-Op

Stardew Valley
Shared: Farming Sim · Simulation · Relaxing

My Time at Portia
Shared: Farming Sim · Simulation · Crafting

Hello Kitty Island Adventure
Shared: Cozy · Simulation · Casual

Farm Together
Shared: Online Co-Op · Simulation · Farming Sim

Coral Island
Shared: Farming Sim · Simulation · Relaxing

Dinkum
Shared: Farming Sim · Relaxing · Crafting

Teddy's Haven
Shared: Cozy · Simulation · Casual

Infinity Nikki
Shared: Casual · Relaxing · Simulation

DAVE THE DIVER
Shared: Casual · Relaxing · Adventure

Sun Haven
Shared: Farming Sim · Relaxing · Crafting

Valheim
Shared: Online Co-Op · Crafting · Building

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

Disney Dreamlight Valley
Shared: Relaxing · Simulation · Casual

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

Roots of Pacha
Shared: Farming Sim · Online Co-Op · Relaxing

Starsand Island
Shared: Farming Sim · Casual · Simulation

Outbound
Shared: Cozy · Online Co-Op · Exploration

Doloc Town
Shared: Farming Sim · Cozy · Casual

Enshrouded
Shared: Online Co-Op · Crafting · Exploration

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

Echoes of the Plum Grove
Shared: Cozy · Farming Sim · Casual

Garden Paws
Shared: Farming Sim · Crafting · Exploration

Don't Starve Together
Shared: Online Co-Op · Crafting · Adventure