Defeat the first Boss to unlock Blaze.
Successfully complete the game to unlock all sound tracks except for tracks 110 to 127. Successfully complete the Extra Zone to unlock the final set of tracks.
Successfully complete the game to unlock Time Attack mode. Successfully complete the Extra Zone to unlock four additional Time Attack mode levels (Zone X Act 1 through Act 4).
Successfully complete Sonic's and Blaze's story line with all seven Chaos Emeralds to unlock Extra Zone at the character selection screen, where you play as Super Sonic and Super Blaze.
To stay in flight longer while playing as Blaze the cat, instead of holding R, rapidly tap R. This should increase your time of flight in the air by a lot.
Play either Leaf Storm Act 2 or Mirage Road Act 2 repeatedly to get easy lives. You should get about one or two extra lives each time you play.
In Dead Line Act 1, run into the first spring, then release the D-pad and Sonic will be running backwards.
Jump to a curved wall (at the side of a loop) and press the D-pad in the direction that you are hitting the wall. Sonic or Blaze will stick to the wall as long as you hold the D-pad.
This stage has the most rings in the game. If you can find the Ring Magnet power-up, you can probably get at least 300 rings.
When there a bunch of spikeballs, instead of trying to get all of the rings, just stay on the path that has the ring with the "5" in it. If you try to get all of the rings, you will get hit.
After the first rail, do not stand on the ring thing. Instead, use the spring next to it and jump on top of two blocks. There will be a Star and a Mystery Box. Also, always try to go up instead of down in this stage.
When running up the robot's arm you must stop and crouch at the low point between the forearm and the shoulder. This will prevent you from flying off once he waves his arm.
The first two times the final boss rams into the wall, it does not do any damage to you. The third time, you must hit the Boss or the wall will snap in half and you will fall, lose all of your rings, and die.