Games like Orange Season
Games like Orange Season include Stardew Valley, DAVE THE DIVER, Fields of Mistria, Coral Island, and Sun Haven. We matched them by the tags players give Orange Season on Steam (Dating Sim, Singleplayer, RPG, Adventure, and Fishing): closest matches first, and among equally close ones the better-known games.

Stardew Valley
Shared: RPG · Farming Sim · Pixel Graphics

DAVE THE DIVER
Shared: Adventure · Singleplayer · Pixel Graphics

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

Coral Island
Shared: Dating Sim · Farming Sim · RPG

Sun Haven
Shared: Dating Sim · RPG · Farming Sim

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

鬼谷八荒 Tale of Immortal
Shared: Singleplayer · RPG · Dating Sim

STORY OF SEASONS: Friends of Mineral Town
Shared: Dating Sim · RPG · Singleplayer

Graveyard Keeper
Shared: RPG · Singleplayer · Pixel Graphics

I Am Future: Cozy Apocalypse Survival
Shared: Singleplayer · RPG · Agriculture

Clanfolk
Shared: RPG · Farming Sim · Agriculture

To the Moon
Shared: Singleplayer · Adventure · RPG

The Scroll of Taiwu : Beyond The Dome
Shared: RPG · Singleplayer · Adventure

Melvor Idle
Shared: RPG · Singleplayer · Adventure

The Sims™ 4
Shared: Singleplayer · Dating Sim · Simulation

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

Littlewood
Shared: RPG · Pixel Graphics · Agriculture

Eastward
Shared: Singleplayer · Adventure · RPG

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

Potion Permit
Shared: Singleplayer · Dating Sim · Adventure

Finding Paradise
Shared: Adventure · RPG · Singleplayer

Love Is All Around
Shared: Dating Sim · Singleplayer · RPG

Wandering Sword
Shared: RPG · Singleplayer · Adventure

Forager
Shared: Pixel Graphics · Adventure · Farming Sim