That's not how they are in the games, with one glaring exception. Sonic does have the ability to jump inside a giant ring. which transports him to another world where he can collect more rings. That doesn't appear to be what's happening here, but it's not difficult to understand where the premise came from, and perhaps a little unfair to say it's a straight mimic of Doctor Strange. Still, he also uses rings to stay alive, so where are those?