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

Stardew Valley
Shared: Farming Sim · RPG · Pixel Graphics

Coral Island
Shared: Farming Sim · Life Sim · Simulation

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

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

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

Clanfolk
Shared: Farming Sim · RPG · Life Sim

Littlewood
Shared: Simulation · Life Sim · Pixel Graphics

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

Paralives
Shared: Simulation · Life Sim · Character Customization

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

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

The Sims™ 4
Shared: Life Sim · Simulation · Character Customization

Graveyard Keeper
Shared: RPG · Simulation · Pixel Graphics

Travellers Rest
Shared: Life Sim · Farming Sim · RPG

Cattails | Become a Cat!
Shared: Life Sim · RPG · Simulation

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

DAVE THE DIVER
Shared: Pixel Graphics · RPG · Simulation

The Sims™ 3
Shared: Simulation · Life Sim · Character Customization

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

Hokko Life
Shared: Farming Sim · Simulation · Life Sim

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

Infinity Nikki
Shared: RPG · Open World · Simulation

Dinkum
Shared: Farming Sim · Life Sim · Simulation

Immortal Life
Shared: Farming Sim · RPG · Life Sim