RUST teaches the concepts of impermanence, acceptance, and perseverance. It is a purchase one time game, with no monthly sub. which makes it great for the budget minded. the Facepunch team is constantly adding content and offering weekly skins to customize your toon. The depth of this game is truly wild you start with a rock and a touch and you end up raiding underwater bases, giant enemy team fortresses, abandoned military compounds,  and so much more. one weakness is that RUST  assigns you your toon at log in, so gender is randomized as well as you may end up with a ridiculous hair bun (like me). you are perpetually vulnerable in RUST even when you are off line so thus the concepts of impermanence and acceptance.

I play on a low population very chill server Rustynoobs.com I'm playing on their trios server this month but play a lot on their solo server as well they have very active  and good admins I will highly recommend starting on this or a similar server should you choose the journey. thank you for your time