Moon Zone: Collect all seven Emeralds for all characters. Successfully complete the game as Sonic to unlock the Moon Zone.

Hidden sound test mode songs: To get more than the 39 default songs in sound test mode, successfully complete The Moon Zone, Extra mode, or unlock the Super Sonic Ending. Three additional songs will be available.

Hint: Easy rings: Play the first level. Press Start + Select + A + B to reset the game. Go to the Chao Garden and you will have the rings that were collected, but reset at the start of the next act of the level.

Hint: Easy points and lives: Select the first level as Sonic and go through the last checkpoint in the middle. Then, wait for the timer to reach 9:59:99. You will eventually die and the timer will go back to 0:00:00. Keep going to the right and reach the goal. Your timer should be at 0:05:33 and you will receive a time bonus of 80,000 points and an extra life. This is the easiest way of getting lives. If you want to get two lives at the end of a level, do the Special stage and collect 120 rings or more.

Hint: Casino special stage: Unlimited tries Get the checkpoint thing immediately before the spring. Then, try the special stage. If you fail, there is an extra life to the right, directly above the swinging boat thing. You can get unlimited tries because every time you die the extra life returns.

Hint: Casino Act 1: Easy points: Choose Tails as a character. At the beginning of the stage, do a ball charge (Down + A). When you reach the end of the platform, you should get a higher jump. Then, jump off the small falling platform onto the highest point of the stage. Find the swirling thing and go through it. When you reach the ground, go to the right. There will be a flipper and five balls with stars. Jump on top of the flipper and when a ball is above you, jump. You should get a lot of points.

Hint: Ice Mountain Act 2: Get Emerald: Chose Tails and when you fail to get the Emerald, go down. A check point is located there. Follow the string until you see a platform. There is an extra life and some spikes here. Get the life and die. Once you resume at the check point, fly up to get to the spring. Do this again if you fail.

Hint: Get your Chao to yell at you: Note: This trick requires the television. Let the Chao walk around until it begins to watch the television. While it is watching it, pick up the television and he will begin to yell and scream at you

Hint: Better Chao: If you raise your Chao in the Tiny Chao Garden, it will become stronger and much faster than in the Big Chao Garden in Sonic Adventure 2 Battle.

Hint: Rename Chao: To change the name of your Chao, take the hand and move it over of your Chao's name. It should become highlighted. Press A for a new screen that has characters for your Chao's name. Press B to delete the current name then highlight the new characters and press A to give your Chao a new name. This is useful if you bought the game used, and do not like the name that your Chao was given.

Hint: Many Chaos quickly: Note: This trick requires Sonic Adventure 2 Battle and the link cable. Send the Chao on the Tiny Chao Garden to Sonic Adventure 2 Battle. Then, get a new egg in the Tiny Chao Garden. Since your first egg is free and the white eggs are free, you can get a large amount of Chao.

Hint: Get the Television in the Tiny Chao Garden: First, get the Trumpet and the Duck, then win both of the mini-games there ( the two Game Boys at the top right corner of the screen). If you have 8,000 rings, then you can buy the Television. If not, then it is probably going to take a while to get it, depending on how much rings you have.

Glitch: Act 2: No damage: After you defeat Eggman, stand in the middle of the screen and wait there. The big case with the animals you release will fall and hit you. However, you will not lose any rings or a life.

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