If you a sci-fi person this is the game. You can build anything from buildings to space ships and many more. This is similar to Minecraft where you have to mine and gather resources to build structures. But there are many things that make this game unique like physics, high quality graphics and realistic destruction etc.. Plants, moon, mars and astroids look real and make you wonder for hours. Mountains and sceneries are spectacular. Physics engine can simulate every object in the game realistically.
You can play it locally or online. I prefer online because you can meet many people around the world and make amazing things with collaboration.
The only problem with the game is the graphic card requirement. You will need a decent graphic card to play the game. Internal GPU won't work. GTX1050Ti can run smoothly without any issues. I tried with GT730 but full graphics makes it hard to play the game. Since there are a lot of simulation running you need higher number of GPU core graphic card .