Games like Tiny Space Academy
Games like Tiny Space Academy include Kerbal Space Program, Spaceflight Simulator, Space Engineers, Empyrion - Galactic Survival, and Kerbal Space Program 2. We matched them by the tags players give Tiny Space Academy on Steam (Simulation, Casual, Space, Physics, and Exploration): closest matches first, and among equally close ones the better-known games.

Kerbal Space Program
Shared: Simulation · Space · Physics

Spaceflight Simulator
Shared: Simulation · Space · Space Sim

Space Engineers
Shared: Space · Simulation · Building

Empyrion - Galactic Survival
Shared: Simulation · Space · Building

Kerbal Space Program 2
Shared: Space · Exploration · Physics

Universe Sandbox
Shared: Simulation · Space · Physics

Universe Sandbox
Shared: Simulation · Space · Physics

Garry's Mod
Shared: Physics · Casual · Building

Elite Dangerous
Shared: Space · Simulation · Space Sim

Cosmoteer: Starship Architect & Commander
Shared: Space · Building · Space Sim

People Playground
Shared: Physics · Simulation · 2D

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

X4: Foundations
Shared: Simulation · Space · Exploration

Avorion
Shared: Exploration · Space · Space Sim

SPORE™
Shared: Simulation · Space · Casual

Exo One
Shared: Space · Exploration · Physics

Solar 2
Shared: Space · Casual · Simulation

Hardspace: Shipbreaker
Shared: Simulation · Space · Physics

Poly Bridge
Shared: Simulation · Physics · Building

SpaceEngine
Shared: Casual · Space · Space Sim

Goat Simulator
Shared: Simulation · Physics · Casual

EVE Online
Shared: Exploration · Space Sim · Simulation

Oxygen Not Included
Shared: Building · Simulation · Space

Aviassembly
Shared: Physics · Building · Simulation