This is a list of pre-release and unused content for the game Game & Watch Gallery 4.
Early builds
Several pre-release screenshots shows that the game elements were very different from those seen in the final product.
| Pre-release image | Name | Description | Final release image |
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Title screen | The title screen of the game showed many differences to the final version. Ignoring the Japanese text, the hatched Yoshi Egg and Koopa Troopa are closer together, the seagull was larger and there was no black crow present in the top left corner. There is also no bar at the bottom that reads "©1980-2002 Nintendo". | 
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Game select screen | Of all the changes seen above, the game select screen has likely to have changed the most. The background was purple and the "game select" logo was larger. The Modern/Classic box was made blue and was given corners rather than round edges. When selecting a game, the game logo was more decorated and there is no brick wall seen at the bottom of the screen. | 
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Donkey Kong Jr. | The vine's leaves are different from those seen in the final game. The tree see in the top left corner is much less detailed. The Mario and "miss" icon sprites are different. | 
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Rain Shower | All the sprites seem to be different to those seen in the final version. Bowser's eyebrow is different, Donkey Kong Jr. is not symmetrical, Princess Peach's face and crown looks slightly different. Wario has a much redder nose and the shape of the face has changed completely. Luigi's hand is smaller, and Mario's sprite was given a overhaul as well. | 
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Octopus | Very little appears to have changed in the game Octopus. The only visible difference is the change of Mario's sprite, white was given better shading and also faces more to the right. | 
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Fire | Mario and Luigi's sprites are fairly shorter. | 
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Donkey Kong 3 | Mario's sprite was taken directly from Super Mario World, whereas Donkey Kong's is slightly different. His tie is a brighter color. The Fireball is more swirly (like in Mario Bros.. Donkey Kong's "miss" icon is also very different, and is not seen in 1 Player mode. | 
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Donkey Kong | Little change was made to the level's background, but almost all the sprites look different from those seen in the final. Peach is taller in this screenshot. Mario's "miss" icon was changed as well. Mario's face is less grainy, while the Paratroopa was changed from a Super Mario World-based sprite into something more unique. | File:GWG4-Donkey Kong Gameplay.PNG |
Unused data
A few sprites were found in the game's data, which do not appear in the final game.[1]
| Sprite | Description |
|---|---|
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A sprite design of Mario was to be used in the game Mario's Cement Factory. It looks similar to the sprite used in Super Mario World, but is not used in the final game. |
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Appearing in the game Donkey Kong, an used sprite for Mario is seen. This seems to be a slightly strange design, as it doesn't look much like Mario's generic appearance. |
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This sprite was to appear in the Mario Bros. game, and seems to be an alternate "miss" icon for Luigi. In the final version, only a Mario miss icon is seen (even if the miss was at the fault of Luigi). |
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An unused sprite of a Heart is seen within the Boxing game. This heart is only a single frame, meaning that is wasn't made to move during development. In the final version, the hearts are more round and burst when the player loses health. |