0 to 60 missions: One Game Gear game for every 20 missions.
Tails Adventure is unlocked for getting the other 11 missions.
Silver Chao egg
Go to the Mystic Ruins. Go to the water fall located in the middle of the Adventure Field. Push the stone that is jutting out of the wall to the right of the water fall. A silver egg will fall from behind the waterfall and float to shore. When it hatches, a silver Chao will be born.
Golden Chao egg
Go to the Station Square area. Then, go to the area when you fought Chaos for the first time. Look to the side of the City Hall entrance to find egg shaped rock. Take the rock to the building to the left from City Hall. Walk to the window to see a golden Chao egg. However, if you try to take it the front door will lock. Replace the egg with the rock and the door will unlock, allowing you to leave with the egg. When the egg hatches you will have a golden Chao.
Black and Blue Chao egg
Go to the Egg Carrier. Then, go the jail area where Amy was kept. In the cell next to where she was held is a black and blue egg. Step on the switch to open the door. Take the egg to the garden. When it hatches, it will be a dark grey and dark blue Chao.
With either Knuckles or Rouge, start digging around in the Chao Garden. Eventually a pumpkin will appear. In the Dark garden, a skull will appear. If you give it to the Chao mixed with the Skeleton Dog it will put it on its head. If you want to take it off, either throw or hit your Chao.
Run on foot in City Escape stage
At the start of the City Escape stage, instead of landing on the ground with the board, scrape the roads on the board. When on foot run full speed at a wall and get knocked down. Pause the game if you fall after hitting the wall. Choose to restart the stage to run on foot and not on the board.
In 2-player mode, brake down the entire way and let the other player go ahead and get rings for a special attack. Thier attack will knock you of your board.
- The Legend of Zelda: Ocarina of Time
Mario Characters
Go to the garden in the castle where you first meet Zelda. Go to the right and look in the window.
Alternate stage music
While holding L or R select a stage with A and the stage will have different background music.
Play as Dr. Mario
Successfully complete classic mode with Mario without losing a life to unlock Dr. Mario. Alternately, play 100 versus mode matches. The winner of the 100th match will fight Dr. Mario. Defeat him and he will become a playable character.
Play as Falco Lombardi
Successfully complete the 100 man melee to unlock Falco Lombardi. Alternately, play 300 versus mode matches.
Play as Gannondorf
Successfully complete event mode #29 (Triforce Gathering) to unlock Ganondorf. Alternately, play 600 versus mode matches.
Play as Jigglypuff
Successfully complete adventure mode on any difficulty setting to unlock Jigglypuff . Alternately, fight 50 multi-player battles.
Play as Luigi
Successfully complete the first stage of adventure mode with a time of xx:x2:xx. You will have to battle Luigi and defeat him in under one minute. Finish the remainder of adventure mode. At the end of adventure mode you will fight Luigi. Defeat Luigi and he will become a playable character. Alternately, playing 800 versus mode battles. After you have played 800 battles, the winner of the battle will be challenged by Luigi. If you lose, Luigi will challenge the winner of the next versus mode battle.
Play as Mewtwo
Mewtwo will appear at random at the end of a multi-player match and challenge the winner. He will be unlocked as a selectable character after he is defeated. Alternately, play 20 hours in melee vs. mode (combined number of human players times the number of hours). To get Mewtwo easily, go into Custom Rules Melee and change "Stock" to "3" and "Item Flow" to "None", and "Stock Time Limit" to "Off". Choose two of your best characters (for fighting Mewtwo) and go into a match in the Pokemon Stadium level. Place both fighters on the Pokeball in the middle. Do not pause the game. Unplug the controllers, and leave the system on overnight to accumulate game time. Plug in the controllers again, and have one of the fighters die three times. If enough hours have been accumulated, Mewtwo will challenge you. Defeat him to unlock him as a playable character.
Play as Mr. Game & Watch
Successfully complete classic mode with all other 24 characters or complete target test mode with all other 24 characters to unlock Mr. Game & Watch. Alternately, play over 1,000 versus mode matches.
Play as Pichu
Accomplish one of the following to unlock Pichu:
- Unlock both Luigi and Falco.
- Complete event mode #37. After winning, Pichu will become playable.
- Complete adventure or classic mode as Mewtwo.
- Play 200 matches in versus mode.
Play as Prince Marth
Play with all 14 default characters in classic mode without continuing to unlock Prince Marth. Alternately, play vs. mode more than 400 times. Alternately, play versus mode with all of the default characters. Marth will challenge the last character you played as (if you won the match). If you lose against him, then he will reappear to challenge the winner of the next versus match. Alternately, successfully complete classic mode with Ness on the very easy difficulty setting without continuing.
Play as Roy
Successfully complete the game with Prince Marth in classic mode to unlock Roy. Alternately, play over 900 versus mode matches.
Play as Young Link
Successfully complete classic mode ten times with different characters each time. One time must be with Link. Alternately, complete adventure mode with Ganondorf. Alternately, play 500 versus mode matches.
Infinity Extra Lives
At the tittle screen, press LRLRRRUD then B and you should hear a sound.
