Space Engineers: Pros and Cons 

Alright I got the game back in 2015. As of current 9600hr. When I started I would do college level engineering homework in SE sometimes. Even got into modding for SE. Base game 100% worth it, get it. Better yet do it when it's on sale. DLCs depends on which one you're looking at. I actually have all of them but have never paid for any of them, I got some good friends. As for what version, if you have a PC that can run it, do PC. The console and game pass versions are essentially just a really good "demo". If you can't do PC now, then get the "demo" version for the time being and save up for a PC. As for what DLC are worth it, Yes: Frostbite, Sparks of the Future, Heavy Industry, Warfare 2. Must: Automatons The reason being is that a lot of the blocks in this pack are inset, which then allows for PCU (Performance Cost Unit) saving Eh Maybe: Decorative Pack, Decorative Pack 2, Decorative Pack 3, Signal Pack No: Deluxe, the only thing worth it in this one is the gold skin.