Space Simulator

Space Simulator is a spaceflight simulator set across a full-scale Solar System. You pilot spacecraft, plan orbital maneuvers and fly missions ranging from Apollo flights to Space Shuttle landings and free-roam scenarios. Its physics system calculates gravitational forces from moons and distant celestial bodies, as well as orbital instabilities and resonances, and predicts real n-body trajectories that change in real time. This lets you design and fine-tune complex maneuvers such as orbital slingshots.

Missions and spacecraft

The game includes Steam-specific missions and a legacy mode with missions and models from the mobile version. The Steam-specific content begins with Chapter 1: The Apollo Days, starting with Apollo 8 lunar-orbit missions. The Apollo Program mission selection is intended to grow to include all relevant missions.

Project Apollo includes the complete Apollo 11 program. You can fly individual missions or the program from beginning to end: launch the Saturn V from Cape Kennedy, perform Trans-Lunar Injection and transposition, rotation and docking, land on the Moon, complete the lunar ascent and rendezvous, then return to Earth for reentry and splashdown.

The Space Transportation System includes Space Shuttle missions. You launch from Cape Kennedy, rendezvous and dock with the International Space Station, then return to Earth for reentry and a final landing in either day or night scenarios. The game also includes contemporary spacecraft such as the SLS (Orion).

Free-roam flights

You can create free-roam scenarios with general-purpose spaceships across the Solar System, including its planets and major moons. These flights let you practise maneuvers such as gravitational slingshots and Hohmann transfer orbits, plan trips to distant planets, rendezvous and dock with the ISS, or fly the hypersonic X-15 space plane to the edge of space and back.

Flight systems and worlds

Interactive multifunction displays in the spacecraft cockpits provide flight data through orbit, surface, transfer, docking, flight and HSI panels, among others. Apollo spacecraft include an emulation of the Apollo Guidance Computer and DSKY running actual code from the 1960s, allowing you to control the spacecraft as the astronauts did.

The planets use high-resolution NASA imagery, and selected worlds—including Earth, the Moon and Mars—have 3D surfaces modeled from NASA altitude data. The game also uses original audio where possible for Apollo and Space Shuttle missions.