Games like Moonstone Island
Games like Moonstone Island include Stardew Valley, Fields of Mistria, Terraria, Clanfolk, and Graveyard Keeper. We matched them by the tags players give Moonstone Island on Steam (Creature Collector, Deckbuilding, 2D, Pixel Graphics, and Cute): closest matches first, and among equally close ones the better-known games.
Stardew Valley
Shared: Pixel Graphics · Farming Sim · Life Sim
Fields of Mistria
Shared: Pixel Graphics · Farming Sim · Cute
Terraria
Shared: 2D · Sandbox · Pixel Graphics
Clanfolk
Shared: Pixel Graphics · Farming Sim · Life Sim
Graveyard Keeper
Shared: Pixel Graphics · Sandbox · RPG
Littlewood
Shared: Pixel Graphics · Life Sim · Sandbox
Sun Haven
Shared: Pixel Graphics · Farming Sim · Life Sim
Tiny Pasture
Shared: Cute · Creature Collector · Pixel Graphics
Forager
Shared: Pixel Graphics · 2D · Sandbox
Little Witch in the Woods
Shared: Pixel Graphics · Cute · Life Sim
WorldBox - God Simulator
Shared: Sandbox · Pixel Graphics · Building
Horsey Game
Shared: Creature Collector · 2D · Sandbox
The Sims™ 4
Shared: Life Sim · Building · Sandbox
Travellers Rest
Shared: Pixel Graphics · Life Sim · Farming Sim
Staxel
Shared: Cute · Farming Sim · Sandbox
People Playground
Shared: Sandbox · 2D · Pixel Graphics
DAVE THE DIVER
Shared: Pixel Graphics · Adventure · Farming Sim
Let's Build a Zoo
Shared: Pixel Graphics · Creature Collector · Sandbox
Kynseed
Shared: Sandbox · Farming Sim · 2D
Kabuto Park
Shared: Creature Collector · Cute · Deckbuilding
Roots of Pacha
Shared: Pixel Graphics · Farming Sim · Life Sim
Slime Rancher 2
Shared: Cute · Creature Collector · Relaxing
Planet Centauri
Shared: 2D · Creature Collector · Sandbox
Noita
Shared: Pixel Graphics · 2D · Sandbox