Games like Planet Explorers
Games like Planet Explorers include Mount & Blade II: Bannerlord, Kerbal Space Program, Mount & Blade: Warband, 鬼谷八荒 Tale of Immortal, and S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition. We matched them by the tags players give Planet Explorers on Steam (Open World Survival Craft, Sandbox, Open World, Survival, and Multiplayer): closest matches first, and among equally close ones the better-known games.

Mount & Blade II: Bannerlord
Shared: Open World · Sandbox · Multiplayer

Kerbal Space Program
Shared: Sandbox · Open World · Building

Mount & Blade: Warband
Shared: Open World · Sandbox · RPG

鬼谷八荒 Tale of Immortal
Shared: Sandbox · RPG · Adventure

S.T.A.L.K.E.R. 2: Heart of Chornobyl - Standard Edition
Shared: Open World · Survival · RPG

Forager
Shared: Open World Survival Craft · Survival · Sandbox

Kenshi
Shared: Sandbox · Open World · Survival

Dragon's Dogma 2
Shared: Open World · RPG · Adventure

The Witcher 3: Wild Hunt — Remastered
Shared: Open World · RPG · Adventure

This War of Mine
Shared: Survival · Crafting · Adventure

Black Myth: Wukong
Shared: RPG · Action · Adventure

Escape From Duckov
Shared: Adventure · Survival · Exploration

House Flipper
Shared: Multiplayer · Sandbox · Building

Project Zomboid
Shared: Survival · Open World · Open World Survival Craft

Chrono Ark
Shared: RPG · Adventure · Indie

Monster Hunter: World
Shared: Open World · Multiplayer · RPG

Noita
Shared: Sandbox · Open World · Indie

Sultan's Game
Shared: RPG · Adventure · Simulation

Don't Starve Together
Shared: Open World Survival Craft · Survival · Open World

Don't Starve
Shared: Open World Survival Craft · Survival · Sandbox

The Escapists
Shared: Crafting · Survival · Adventure

Torchlight II
Shared: RPG · Multiplayer · Adventure

Terraria
Shared: Open World Survival Craft · Sandbox · Survival

City Car Driving
Shared: Open World · Multiplayer · Simulation

