We recommend V Rising. It's an ARPG (Diablo-like), but with big focus on base building.
You mine, you craft, you build a cool looking goth castle, and then you hunt enemies or bosses using your upgraded weapon and new skills. It's very fun. You can spin up a local server and modify your own server/game rules to increase progress speed (as some features are designed for a 24/7 server, and your game only advances when it's running, so some speedups are necessary)
Mini Metro and Mini Motorways, for sure!