Thanks for taking a look and for the feedback, Jatsu! I appreciate you taking the time to do that. I've added the bugs/issues you mentioned to the Trello board for when I get back from travel next week.
One quick thing, if you revisit this thread. Are the black lines/clipping you mention appearing in the sand? I think I remember watching a video about what might cause an issue like that. I'll check it out.
I think the oases transport issue is a mixup with something I did with the prefab. It should be a quick fix. Thanks for letting me know.
I'll adjust the game over music volume too.