Prerelease:Super Smash Bros. Melee

E3 2001 Trailer #1
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 * The top of Cranky Kong's house in Jungle Japes has a different texture.
 * Adventure Mushroom Kingdom has a different layout and a tree.
 * Peach is seen walking out of bounds in Onett, meaning it was once bigger.
 * There is an extra platform in Temple.
 * Yoshi's Story has a different layout.
 * Yoshi's Island has 5 extra blocks and looks much smaller.
 * Four identically colored Kirby's are seen fighting, possibly meaning that alternate colors have not yet been implemented.
 * Yoshi and Captain are seen fighting once again outside the bounds of Onett.
 * Pokemon Stadium has a blank screen.
 * Ness is seen coming out of the lab in Great Bay.
 * Corneria has a lot more buildings
 * There is a more clear view of Temple's extra platform.
 * Fourside has much more simplistic textures.
 * Both Samus and Ice Climbers are seen fighting in Adventure Mushroom Kingdom, which is a single-player only stage.
 * The Topis are seals.
 * Fox's laser pistol sounds different.

E3 2001 Trailer #2
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 * The main menu says "Top Menu".
 * Options, Data and Special Melee are locked.
 * The menu has a different select sound.
 * Rainbow Cruise is completely different, in terms of design, layout and textures.
 * The trophy lottery has a completely different background. There's a casino board and a ship.
 * The Goomba trophy is different.

2001_08_27_1
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 * The early layout of Adventure Mushroom Kingdom is seen.
 * There are signs with the castle on it.
 * There are the trees seen in the All-Star Rest Area.

2001_06_29
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 * The lab is in the foreground.
 * Mario and Link are seen standing on and going inside the lab, showing that it was once part of the stage.

2001_05_17
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 * The early version of Yoshi's Story is clearly seen.
 * The pipes are in different locations in Mushroom Kingdom.

Brinstar Escape
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 * The narrator says "Time Up" when you run out of time.
 * There is a "Coming Soon" screen.

Onett
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 * The stage selection screen has a different layout.
 * Onett has a completely different song.

Early Character Select Screens
The character select screen was different. The markers are white instead of colored like the player, the layout is different, Kirby's portrait is higher up, and there only seem to be 13 characters.

This is a later version that only has 10 characters.

Early Classic Mode
An early screenshot of Classic Mode. There is a space background, no path at the top of screen, and Mario and Fox are doing completely different poses.