Games like Space Universe
Games like Space Universe include Beasts of Bermuda, Last Oasis, The Scroll of Taiwu : Beyond The Dome, Touhou Big Big Battle, and Notes of Soul. We matched them by the tags players give Space Universe on Steam (Adventure, Simulation, RPG, Massively Multiplayer, and Indie): closest matches first, and among equally close ones the better-known games.

Beasts of Bermuda
Shared: Simulation · Adventure · Massively Multiplayer

Last Oasis
Shared: Massively Multiplayer · RPG · Adventure

The Scroll of Taiwu : Beyond The Dome
Shared: RPG · Adventure · Indie

Touhou Big Big Battle
Shared: Early Access · Massively Multiplayer · Indie

Notes of Soul
Shared: Massively Multiplayer · Adventure · RPG

Project: Gorgon
Shared: RPG · Massively Multiplayer · Indie

The Isle
Shared: Simulation · Massively Multiplayer · Adventure

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

Hand Simulator: Survival
Shared: Adventure · Simulation · RPG

Graveyard Keeper
Shared: RPG · Simulation · Indie

我来自江湖 From Jianghu
Shared: Simulation · Adventure · RPG

Home Behind
Shared: Adventure · RPG · Simulation

Pantheon: Rise of the Fallen
Shared: Adventure · RPG · Massively Multiplayer

Home Behind 2
Shared: Adventure · RPG · Simulation

Dark and Light
Shared: RPG · Massively Multiplayer · Adventure

Shoppe Keep
Shared: Simulation · RPG · Adventure

EmergeNYC
Shared: Simulation · Early Access · RPG

Ghost of Dragon
Shared: Adventure · RPG · Simulation

OMON Simulator
Shared: Simulation · Adventure · RPG

The Elder Scrolls Online - Standard Edition
Shared: RPG · Adventure · Massively Multiplayer

Feed and Grow: Fish
Shared: Simulation · Early Access · Adventure

My Time at Portia
Shared: RPG · Simulation · Adventure

Flashing Lights - Police, Firefighting, Emergency Services (EMS) Simulator
Shared: Adventure · Simulation · RPG

Sultan's Game
Shared: RPG · Simulation · Adventure