Games like Pony World 3
Games like Pony World 3 include Plants vs. Zombies GOTY Edition, Slime Rancher, Muse Dash, Slime Rancher 2, and Unpacking. We matched them by the tags players give Pony World 3 on Steam (Horses, Casual, Family Friendly, Indie, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Plants vs. Zombies GOTY Edition
Shared: Casual · Singleplayer · Family Friendly

Slime Rancher
Shared: Cute · Singleplayer · Casual

Muse Dash
Shared: Casual · Cute · Singleplayer

Slime Rancher 2
Shared: Singleplayer · Cute · Casual

Unpacking
Shared: Casual · Cute · Singleplayer

Passpartout: The Starving Artist
Shared: Casual · Indie · Simulation

Donut County
Shared: Casual · Indie · Cute

Sticky Business
Shared: Casual · Indie · Simulation

Mountain
Shared: Casual · Indie · Simulation

Tricolour Lovestory
Shared: Casual · Simulation · Sexual Content

Assemble with Care
Shared: Casual · Indie · Singleplayer

Papers, Please
Shared: Indie · Simulation · Singleplayer

Plague Inc: Evolved
Shared: Indie · Simulation · Singleplayer

Game Dev Tycoon
Shared: Indie · Casual · Simulation

Pretty Neko
Shared: Casual · Indie · Simulation

Equilinox
Shared: Casual · Indie · Simulation

LEGO® Builder's Journey
Shared: Indie · Casual · Cute

OneShot
Shared: Indie · Cute · Singleplayer

A Short Hike
Shared: Indie · Casual · Cute

Golf With Your Friends
Shared: Casual · Indie · Family Friendly

MiSide
Shared: Cute · Singleplayer · Sexual Content

NEKOPARA Vol. 1
Shared: Cute · Singleplayer · Hentai

your wife
Shared: Casual · Cute · Sexual Content

Bloons TD 6
Shared: Singleplayer · Family Friendly · Casual