Games like Sunfinity
Games like Sunfinity include Stardew Valley, Plantera, Cookie Clicker, Shelldiver, and Rusty's Retirement. We matched them by the tags players give Sunfinity on Steam (Incremental, Agriculture, Automation, Management, and Simulation): closest matches first, and among equally close ones the better-known games.

Stardew Valley
Shared: Farming Sim · Agriculture · Simulation

Plantera
Shared: Incremental · Agriculture · Automation

Cookie Clicker
Shared: Incremental · Management · Casual

Shelldiver
Shared: Incremental · Management · Simulation

Rusty's Retirement
Shared: Automation · Management · Farming Sim

Potion Craft: Alchemist Simulator
Shared: Simulation · Management · Relaxing

Digseum
Shared: Incremental · Management · Simulation

DAVE THE DIVER
Shared: Management · Relaxing · Casual

Game Dev Tycoon
Shared: Management · Simulation · 2D

Farming Simulator 19
Shared: Agriculture · Simulation · Farming Sim

Nodebuster
Shared: Incremental · Simulation · Management

Farm Together
Shared: Agriculture · Simulation · Relaxing

Voodoo Garden
Shared: Incremental · Farming Sim · Simulation

Fortune Mill
Shared: Incremental · Automation · Simulation

Farm Manager 2018
Shared: Management · Agriculture · Farming Sim

Tiny Pasture
Shared: Incremental · Farming Sim · Management

Farming Simulator 22
Shared: Simulation · Agriculture · Farming Sim

Fracture Field
Shared: Incremental · Automation · Management

MR FARMBOY
Shared: Automation · Incremental · Agriculture

Click the Button
Shared: Incremental · Simulation · Point & Click

A Game About Feeding A Black Hole
Shared: Incremental · Relaxing · Simulation

Game Corp DX
Shared: Management · Simulation · 2D

Your Big, Cute Monster Farm
Shared: Simulation · Farming Sim · Agriculture

Chef Knight
Shared: Incremental · Simulation · Management