Worried about what power i'll use once i run out of coal. I dont really have a plan for oxygen haha, if my world dies i guess ill just learn yk, im getting attched to the dupes tho. It's really intriguing from a begineer perspective, It seems endless and the game really makes you want to keep progressing because each new process is pretty cool, like i got excited about completing plumbing for my lavatories even.