In Spaceflight Simulator, players take command of their own space program, designing rockets, planning launches, and executing interplanetary missions. The game emphasizes trial and error, allowing players to learn how to build effective spacecraft tailored to various missions.

The storyline of Spaceflight Simulator revolves around the player's journey to explore the Solar System, starting from Earth and venturing to other celestial bodies, each with unique challenges and conditions. Players aim to build a presence in space through multiple missions.

Spaceflight Simulator stands out with its detailed parts system and realistic physics, enabling players to create custom rockets and experience the complexities of space travel, including atmospheric conditions and gravitational pulls on different planets and moons.