Games like SpiceX
Games like SpiceX include Internet Cafe Simulator 2, DAVE THE DIVER, SpaceEngine, X4: Foundations, and Avorion. We matched them by the tags players give SpiceX on Steam (Casual, Simulation, Arcade, Space Sim, and Exploration): closest matches first, and among equally close ones the better-known games.

Internet Cafe Simulator 2
Shared: Simulation · Exploration · 3D

DAVE THE DIVER
Shared: Casual · Exploration · Management

SpaceEngine
Shared: Casual · Space Sim · 3D

X4: Foundations
Shared: Simulation · Space Sim · Exploration

Avorion
Shared: Space Sim · Exploration · Flight

Goat Simulator 3
Shared: Simulation · Exploration · Casual

Exo One
Shared: Exploration · Flight · Space Sim

Shelldiver
Shared: Casual · Arcade · Simulation

Prison Escape Simulator: Dig Out
Shared: Simulation · Casual · 3D

ACE COMBAT™ 7: SKIES UNKNOWN
Shared: Arcade · Flight · 3D

Nodebuster
Shared: Casual · Simulation · Arcade

Superflight
Shared: Casual · Flight · Exploration

JDM: Japanese Drift Master
Shared: Arcade · Exploration · Casual

Nuclear Option
Shared: Simulation · Flight · 3D

Slime Rancher
Shared: Exploration · Simulation · Casual

Elite Dangerous
Shared: Space Sim · Simulation · Exploration

Kerbal Space Program
Shared: Simulation · Space Sim · Exploration

PowerWash Simulator
Shared: Casual · Simulation · 3D

Game Dev Tycoon
Shared: Simulation · Casual · Management

Retro Rewind - Video Store Simulator
Shared: Simulation · Casual · Management

Tower! Simulator 3
Shared: Simulation · Flight · Casual

EVE Online
Shared: Space Sim · Exploration · Simulation

Barn Finders
Shared: Casual · Simulation · Exploration

Two Point Museum
Shared: Casual · Simulation · Exploration