Games like Retro Relics
Games like Retro Relics include Terraria, Slime Rancher, A Short Hike, theHunter: Call of the Wild™, and The Long Dark. We matched them by the tags players give Retro Relics on Steam (Exploration, Collectathon, Sandbox, Investigation, and Nature): closest matches first, and among equally close ones the better-known games.

Terraria
Shared: Sandbox · 2D · Exploration

Slime Rancher
Shared: Exploration · Cute · Sandbox

A Short Hike
Shared: Exploration · Cute · Relaxing

theHunter: Call of the Wild™
Shared: Nature · Sandbox · Relaxing

The Long Dark
Shared: Exploration · Sandbox · Open World

SPORE™
Shared: Sandbox · Exploration · Open World

APICO
Shared: Exploration · Sandbox · Nature

Big Walk
Shared: Exploration · Sandbox · Relaxing

Starbound
Shared: Sandbox · Exploration · Adventure

Fallout 4
Shared: Exploration · Open World · Sandbox

Firewatch
Shared: Exploration · Walking Simulator · Adventure

Webbed
Shared: Exploration · Cute · 2D

DEATH STRANDING DIRECTOR'S CUT
Shared: Walking Simulator · Exploration · Open World

Disney Dreamlight Valley
Shared: Exploration · Sandbox · Relaxing

Core Keeper
Shared: Exploration · Sandbox · Open World

DAVE THE DIVER
Shared: Exploration · Relaxing · Adventure

Carto
Shared: Exploration · Cute · Relaxing

Submerged
Shared: Exploration · Walking Simulator · Nature

Aniimo
Shared: Exploration · Collectathon · Open World

Meadow - A Shelter Game
Shared: Cute · Exploration · Relaxing

No Man's Sky
Shared: Exploration · Sandbox · Open World

Shelter
Shared: Exploration · Nature · Cute

Ogu and the Secret Forest
Shared: Exploration · Collectathon · Cute

SnowRunner
Shared: Exploration · Sandbox · Simulation