Games like Greenfield Valley
Games like Greenfield Valley include Slime Rancher, Farming Simulator 22, Stardew Valley, Wobbly Life, and My Time at Portia. We matched them by the tags players give Greenfield Valley on Steam (Adventure, Casual, Farming Sim, Simulation, and Agriculture): closest matches first, and among equally close ones the better-known games.

Slime Rancher
Shared: Adventure · Cute · Casual

Farming Simulator 22
Shared: Farming Sim · Simulation · Agriculture

Stardew Valley
Shared: Farming Sim · Simulation · Agriculture

Wobbly Life
Shared: Adventure · Simulation · Casual

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

Slime Rancher 2
Shared: Cute · Adventure · Casual

Farm Together 2
Shared: Farming Sim · Agriculture · Family Friendly

Farm Together
Shared: Agriculture · Simulation · Casual

Hello Kitty Island Adventure
Shared: Adventure · Simulation · Casual

SPORE™
Shared: Simulation · Casual · Sandbox

Farming Simulator 19
Shared: Farming Sim · Simulation · Agriculture

Farming Simulator 17
Shared: Farming Sim · Simulation · Agriculture

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

House Flipper
Shared: Simulation · Casual · Adventure

Infinity Nikki
Shared: Casual · Cute · Simulation

Grow: Song of the Evertree
Shared: Adventure · Casual · Farming Sim

Farm Manager 2018
Shared: Farming Sim · Casual · Agriculture

Farmer's Dynasty 2
Shared: Farming Sim · Simulation · Casual

Yonder: The Cloud Catcher Chronicles
Shared: Adventure · Farming Sim · Casual

Coral Island
Shared: Farming Sim · Simulation · Agriculture

Farmers Life
Shared: Farming Sim · Simulation · Agriculture

Planet Coaster
Shared: Simulation · Family Friendly · Sandbox

Garden Paws
Shared: Agriculture · Farming Sim · Sandbox

Little Witch in the Woods
Shared: Casual · Cute · Simulation