Games like Harvest Green
Games like Harvest Green include Volcano Princess, Stardew Valley, DAVE THE DIVER, Two Point Museum, and Travellers Rest. We matched them by the tags players give Harvest Green on Steam (Casual, JRPG, Life Sim, Base Building, and Management): closest matches first, and among equally close ones the better-known games.

Volcano Princess
Shared: Life Sim · Visual Novel · RPG

Stardew Valley
Shared: Life Sim · RPG · Casual

DAVE THE DIVER
Shared: Casual · Management · Adventure

Two Point Museum
Shared: Casual · Life Sim · Strategy

Travellers Rest
Shared: Life Sim · Management · Medieval

Crusader Kings III
Shared: Medieval · Strategy · Management

Yes, Your Grace
Shared: Medieval · Casual · Life Sim

Potion Craft: Alchemist Simulator
Shared: Management · Medieval · Casual

Minami Lane
Shared: Casual · Life Sim · Management

Game Dev Tycoon
Shared: Casual · Management · Strategy

Prison Architect
Shared: Base Building · Building · Management

Oxygen Not Included
Shared: Base Building · Management · Building

Mini Motorways
Shared: Casual · Management · Strategy

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

Factorio
Shared: Base Building · Strategy · Management

Chinese Parents
Shared: Life Sim · Casual · RPG

RimWorld
Shared: Base Building · Management · Strategy

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

Growing Up
Shared: Life Sim · Casual · RPG

Tavern Master
Shared: Management · Medieval · Building

Gas Station Simulator
Shared: Casual · Management · Base Building

Youtubers Life
Shared: Life Sim · Casual · Management

The Sims™ 3
Shared: Life Sim · Casual · Building

Foundation
Shared: Medieval · Management · Strategy