To unlock the Battlefield stage, complete the All-Star 1-P mode for the first time.

To unlock the Poke Floats stage, you must play at least 200 matches in VS. mode (without quitting).

To unlock the Big Blue stage, you must play at least 150 matches in VS. mode (without quitting).

To unlock the Brinstar Depths stage, you must play at least 50 matches in VS. mode.

To unlock the Dream Land stage of the past, beat Target Test with all characters, regular and hidden.

To unlock the Final Destination stage, you must complete all 51 Event Matches.

To unlock the Flat Zone stage, you must complete 1-P Classic mode at any difficulty/stock with Mr. Game & Watch.

To unlock the Fourside stage, you must play at least 100 matches in VS. mode (without quitting).

To unlock the Mushroom Kingdom II stage, which is from Super Mario Bros. 2 on the NES, simply collect a Birdo trophy.

To unlock the Kongo Jungle from the N64 version of this game, complete the 15-Minute Melee.

To unlock Roy, also from the Fire Emblem series, complete Classic Mode using Marth at any difficulty/stock.

To unlock Pichu, complete Event 37 (Legendary Pokemon). Pichu will challenge you; win and you'll be able to play as Pichu!

Unlock Mr. Game & Watch, by completing both Classic and Adventure 1-P mode or the Target Test with ALL characters at any difficulty/stock

To unlock Mewtwo, play in VS. Mode for either 20 hours (Combined VS. Play Time total), or play 700 matches in that mode.

To unlock Young Link, complete Classic mode with 10 different characters at any difficulty/stock. You'll then be challenged by Young Link; defeat him.

To unlock Marth from the Fire Emblem series, play Classic mode with all 14 regular characters (not ones you've unlocked).

Alternatively, you can simply use every character as a human player in VS. Mode, and get a challenge from Marth that way.

To unlock Jigglypuff, simply complete the game in 1-P Mode at any difficulty/stock (Adventure or Classic).

To unlock Luigi, in Adventure Mode, complete the stage with a 2 in the seconds meter (03:12:43 for example).

To unlock the evil Ganondorf, complete Event 29. You will then be challenged by Ganondorf; defeat him and you can play as him from then on.

To unlock Falco, you must complete the 100-Man Melee mode. Defeat Falco after you complete that, and you can play as him.

To unlock Dr. Mario, you must complete 1-P Classic Mode using Mario at any difficulty/stock and without continuing.

All characters' KOs total more than 1000

Complete Event 47

Unlock the Sound Test

Clear All-Star without continuing

Set a record of 1,476 ft (450 meters) in Home-Run Contest

Complete Event 14

Complete Event 51

Clear All-Star

Set a record of over 984 ft (300 meters) in Home-Run Contest

Clear Target Test with all 25 characters

Complete Event 45

Play 100 VS matches

Play 50 VS matches

Total distance walked by characters is over 10,000 meters

Complete Adventure mode with all 25 characters

Play 150 VS matches

Unlock all 11 secret characters

Play 100 Coin Battle matches

Combined clear time in Target Test is less than 26 minutes

Complete Event 26

See Celebi in your Poke Ball

Set a combined Home-Run Contest record of 16,404 ft (5,000 meters)

Play 200 VS matches

You get three trophies per playable character; one for completing each 1-P Regular Match mode (Classic, Adventure, All-Star)

Complete 100-Man Melee within 240 seconds

Get 100+ KOs in Endless Melee

Complete 15-Minute Melee

Complete All-Star on Hard or higher

Play 100 Coin Battle matches

Perform 125+ combos with all characters combined in Training

Perform a 10+ combo in Training

Complete Event 3

Perform a 20+ combo in Training

Play 100 VS matches

Play 10 VS matches

Play 1,000 VS matches

Complete Adventure on Hard or higher without continuing

Collect over 1,000 Coins (spent coins don't subtract)

Complete All-Star with all 25 characters

Clear Adventure in less than 18 minutes

Defeat Giga Bowser in Adventure Mode without continuing

Complete Classic on Hard or higher without continuing

Load SSBM with a Pikmin save on your memory card

KO more than 5 opponents in Cruel Melee

Complete Classic with all 25 characters

Complete Classic in less than 5 minutes

Combined Target Test time less than 750 seconds

Get every end-of-level bonus and penalty

Beat the game in all three modes as every character and then get them in the Lottery

Nintendo Event

Nintendo Event