Metal 2-Player Characters
Hold A+Y after you select a level in 2-Player Mode

Last Cinema - Complete Last Story in story mode
Team Chaotix Cinema - Complete Team Chaotix in story mode
Team Dark Cinema - Complete Team Dark in story mode
Team Rose Cinema - Complete Team Rose in story mode
Team Sonic Cinema - Complete Team Sonic in story mode
Follow me Complete "Team Rose" in Story Mode
Sonic Heroes - Unlocked at start
Team Chatoix - Complete "Team Chaotix" in Story Mode
This Machine - Complete "Team Dark" in Story Mode
We Can - Complete "Team Sonic" in Story Mode
2P Bobsled Race - Collect 80 emblems
2P Expert Race - Collect 120 emblems
2P Quick Race - Collect 100 emblems
2P Ring Race - Collect 60 emblems
2P Special Stage - Collect 40 emblems
2P Team Battle - Collect 20 emblems

Super Hard difficulty setting
Successfully complete the game with all "A" ranks and 141 emblems.

Fill up the team blast bar quickly
To fill up the team blast bar without killing any enemies or collecting any rings, just switch to power formation during any level with any team and press the B button repeatedly until the bar goes to maximum. When you're pressing the B button the power formation leader should be punching, throwing or whatever that chosen person's attack is. Whilst they are punching away at thin air the team blast bar is going up and up.

Defeat enemys easily
Use the Power character on your team and attack one of the red robots ( or any other lesser robot ) and it will be desroyed in one hit. Also level up your your whole team 3 times and attack a robot and it will explode. Enjoy this hint!

Omega's eye color
When you select Team Dark and everyone is saying something, look at Omega's eyes. They will be white. Select any stage and use the C-stick to look at Omega. His eyes will now be red.

Winking Rogue
As Team Dark, if you are Shadow use the C stick to look at Rouge. She will wink at you.

Dead end
On Team Chaotix's first stage, where you have to collect ten (or twenty) Hermit Crabs, you can get past normal game boundaries and end up in a dead end. Go through the stage as usual and when you get at the end when you have to sting the flower with Charmy, look around. Notice that there are pillars sticking out of the water for no apparent reason. Fly onto the ledge to the right of you. Jump to the next two pillars. You can see the ledge that is in all the other teams' stages. Jump out as far as you can while still in Flight Formation and start to fly. If you are lucky, you can make it up
there. When you get up there, just run through until you reach a cannon. Change to Speed Formation and jump in. You will now be in a dead end where you cannot go any farther and cannot backtrack. You must restart the stage or quit to escape.

Scrambled characters
At the Robot Carnival Boss with Team Dark, hold Y button and repeatedly tap B just before the Boss level loads. The graphics will glitch for a few seconds and the characters will be scrambled. Note: This may require some practice.

Defeating Team Boss
When you fighting a Team Boss use Blue Tornado on them by choosing the Speed Formation for any Team desired.

Floating robots
Select Team Chaotix and go to the Grand Metropolis level. When you reach two robots who are asleep on top of boxes, have Espio turn invisible. Walk up to the boxes where they are standing. Destroy the boxes with Espio's ninja star while he is still invisible. The robots will not fall, and will stay suspended in mid-air. They will float there until you turn visible again or you attack them.

Faster Team Blast
As Team Chaotix, have Espio as the leader then use the Tornado Spin. He will then turn invisible. Then, stand in a place where you will not get hurt or fall down. Keep pressing Action to throw as many ninja stars to gain the full Team Blast.

Ghost pole
This trick requires a few things. You need to be Team Dark, find a pole which requires a switch to activate or to defeat all enemies around, and have your Team Blast. Get to the pole, use your Team Blast to stop time and destroy all enemies around. Hit the switch or switches and use Tornado Attack at the pole. You will be swinging on a ghost pole.

No-faced Cheese
Enable the metallic characters for Team Rose. Notice that Cheese has no face.

Getting Chaos Emeralds
Once you obtain a Key, go to the bonus round. In that round, you must chase the Emerald to the end of the round.

Stop time
As Team Dark, after you do a Team Blast time will be frozen until your Team Blast meter empties.

Secret move
After doing a Team Blast, before the words "Team Blast" in the top right corner of the screen disappears, jump and press B. You will do something similar to the Light Attack in Sonic Adventure 2 Battle and kill all enemies that were not killed by the Team Blast. This only works if there is an enemy to destroy.

Robot Carnival: Easy lives for Team Chaotix
When you have many robots, use Team Blast and you will have more than 100 rings because Team Chaotix can get rings from every enemy with their Team Blast.

Easy coins
To get easy coins, jump on the three stars on the three starred bumper. Note: You will only get a five or ten coin block.

Dr. Robotnik dialogue
When playing as Team Rose, after you complete Egg Carnival, Dr. Robotnik will say "Those were just the easy ones boys", instead of "boys and girls".

Two player Special Stage mode
Collect 40 emblems in single player story or challenge mode.

Final battle
Successfully complete the game with everyone to face Dr. Robotnik in one final battle where everyone is combined to defeat him once and for all.

Defeating Metalmadness
As Team Rose, break one of the boxes to get Team Blast. Get close to him in Power or Fly formation on the edge. Use it, then change to Fly formation attack until you are not invincible. Do the same thing again with the other box, then keep attacking in Fly formation close to him. If you get hit, get back on the stage and avoid the rest of his attacks. Get the rings and try again. Eventually he will lose his 100 HP on that side. Then as Team Chaotix, the color of his weak point changes, and it will not be harmed by that formation (blue impervious to speed, red impervious to power, etc.). First, change to Fly formation and get the balloons above you without getting hit. Get in Power formation, get in the canon on the edge, and fire at the weak point. Note: You will not get hurt in the canon. Do this again until it is red and switch to fly. Do the same thing as Team Rose until it turns yellow. Repeat Power formation and Fly formation until he is defeated. You are now in front of Metal Sonic as Team Dark. First, get the level-ups for all three characters. Rouge's is
in the air and the rest are in the boxes. Attack him in this order, according to color of weak point: red fly, blue power, and yellow power. Power formation does the most damage. It is recommended that you first get a few extra lives for each team including Sonic's for the next Boss if you have a problem getting balloons.The Metal Madness part of the Boss is easy, but is the longest. Every time he shoots three rounds of a crystal attack counter with Homing Attack. If he uses missiles, use Thunder Shoot. If he goes down below the clouds, he will throw a ship at you. To counter, punch the ship. His last attack is Chaos Control. This attack is unavoidable and does not do any damage. The only attack that hurts him is Team Blast. To use it, counter the attacks and most of all check your rings; it still decreases like the other Sonic games while in super mode.

Metallic Team Sonic characters in two player modes
Select a two player mode. Hold A + Y when making a choice at the character selection screen. Keep the buttons held through the level selection screen and release them when game play begins.

Playing final stage in story mode:
When you complete one of the story modes, go to the challenge screen. Notice that one of the stages is not there. To play this stage you must get all seven Chaos Emeralds. You can get the Chaos Emeralds by playing the stages before you face the Boss. Get the key for that stage and go to the bonus stage. Then, catch the Chaos Emerald before you get to the end of the bonus stage. Once you get the all seven Chaos Emeralds, you can play the final stage. There is only one Chaos Emerald for each set of levels.

Super Hard difficulty setting
Successfully complete the game with all "A" ranks and 141 emblems.

We Can song
Successfully complete story mode as Team Sonic.

This Machine song
Successfully complete story mode as Team Dark.

Follow Me song
Successfully complete story mode as Team Rose.

Team Chaotix song
Successfully complete story mode as Team Chaotix.

Two player Team Battle mode
Collect 20 emblems in single player story or challenge mode.

Metallic characters in single player mode
Collect 141 emblems in single player story or challenge mode.

Two player Expert Race mode
Collect 120 emblems in single player story or challenge mode.

Two player Quick Race mode
Collect 100 emblems in single player story or challenge mode.

Two player Bobsled Race mode
Collect 80 emblems in single player story or challenge mode.

Two player Ring Race mode
Collect 60 emblems in single player story or challenge mode