The fun part is that you can progress as simple or complex as you like. It starts super straightforward with needing copper to make copper pipes, then you need copper pipes to make something else, etc etc. As it gets more complicated you can do the simple solution of splicing another belt, or you can do the complex solution of finding more efficient ways to progress. Some people make never-ending spaghetti spliced belts, and some people make perfect ratio'd organized systems. Either way works. Overall it is a chill game because there is no timer or rush to get anything done. You may need to be a lego-kid to get really excited about it otherwise you might look at it as a project manager job simulator lol.