If you want realism, this game is not for you. Building a Dyson Sphere is an impossible task mainly because of the scale, but this game handles that surprisingly well

Let's take a look at our Sun for example, the surface area of the Sun is about 6x10^18 m squared. This means that if we want to build a Dyson Sphere with a thickness of just 1m entirely covering the Sun, we will need 6x10^18 (6 Quintillion) m cubed of materials. For reference the volume Ceres, the Dwarf Planet in the asteroid belt is roughly 0.4x10^18 m cubed. So unless we can find 15 Dwarf Planets made of pure titanium or carbon nano tubes, humanity is still far away from building a Dyson Sphere

In this game the scale is brought down to manageable levels, your local star is no bigger than a planet, and the emptiness of space (especially interstellar space) is remedied by warp travel. Ultimately this game does a great job of creating the illusion of space being a rich and abundant place to feed your mega factories, instead of the vast and empty nothingness that it actually is