To begin, you must build a spacecraft that is able to fly your crew into space without killing them on its path towards space. During building, you are given a collection of parts which must be used to create a functional ship. Each part has its own use and will affect how the ship flies. At its current version, the main feature of the game is the ability to build a spacecraft out of every imaginable combination of parts. With a physic-based flight simulation, this will mean that everything that you create will fly (and crash) as realistically as possible. You will be able to fly to other moons and planets and be able to take your crew out of the ship to do a little exploring.
Once you have built your desired spacecraft, you are ready to lift off. With trying to get the spacecraft off the launch pad, you need to key your eyes on the engine temperatures and the fuel levels to ensure that you don’t explode before lift off. Once you have lift off successfully, each of your thrusters will lose fuel and once you have expended all your fuel, you can jettison those parts to move on to the next stages. It takes a few tries in getting your spacecraft to lift off but after you gain some experience, you will be able to take control of everything to have your ship exit the atmosphere and enter space. Even with its current features, there are still some planned features that will be released in the next versions. One is the ability to manage your own space program where you will choose your astronauts and train them. You will also be able to research and improve parts for your spacecraft. You will also be able to build your own space stations and surface bases on other worlds.
Even as is, the game is already been well-developed. Even as the game is still under development, there is the occasional bug and/or glitch that can occur but other than that, the game is something everyone should have a try at.