their is no rings but the"rings" are the four swords.
well,sonic and the secret rings was like the past to sonic and the black knight so basicly....the vanished.
You must beat the legacy levels first.
Merlina. The seemingly nice sorceress who brought sonic into her world but she later turned on him once he deafeated the black knight.
Beating Legacy levels.
Sonic and the Black Knight is a new Sonic game coming out for the Wii only. It combines Sonic's trademark speed with a new swordfighting system using the Wii remote. Set in the world of King Arthur, Sonic needs to eliminate the Black Knight. (Hence the name.) I'm stopping here so as to not ruin the game.
My guess is that he did what superman does and go around earth REALLY fast
Legacy levels are levels designed to be like older Sonic 3-D games, like Sonic Heroes. Features only in these levels are floating robots that Sonic cannot kill with his sword, only by homing attack (however, Lancelot, Gawain, and Percival can), dash pads, and rings. These are also the only levels where you can get World Rings.
Dark Spines Sonic, is what Sonic transforms into when he has collected all World Rings in Sonic and the Secret of the Rings.
At the end of Sonic and the Black Knight it shows that he was suppose to got out on a date with Amy but got pulled into another world before he had a chance to go out with her.
There are no such things. There are Sol Emeralds, in Blaze's universe and the Chaos Rings in Sonic's universe. There are also World Rings in Sonic and the Secret Rings. If they did exist, they would probably be rings infused with Sol Emerald energy.
It's Dark Spine Sonic. You have to play through the game and collect the seven world rings.
The seven World Rings