Game & Watch Gallery 4 Codes and Unlockables (GBA)

Game & Watch Gallery 4 (known as Game & Watch Gallery Advance in Europe) is a video game for the Game Boy Advance. It is the fourth game in the Game & Watch Gallery series, and so far the latest to date. Containing more playable games than any previous Game & Watch Gallery, it was developed and published by Nintendo, and released on October 28, 2002, with an ESRB rating of "E for Everyone". It allows people to play classic Game & Watch games again, or experience them for the first time.

There are six standard Game & Watch games included, both in their original and a modernized form. The modernized versions have music, color, and Mario characters. Also, several of the games featured in this title were released on other G&W installments. However, because of the power of the Game Boy Advance many of the games color incarnations are upgraded and the classic versions resemble the original game more. Below is a list of all playable games on the cartridge. (Wikipedia)

Codes

Erase all saved data
At the title screen press:

up,up,down,down,left,left,right,right

If done correctly the screen will go black for a moment, and all high scores, stars, etc. will be deleted.

Unlockables

Cast Credits
To view the Cast Credits, collect all 220 stars.

Get the Game&Watch Gallery History
To unlock this option in the Gallery Corner, just get 70 stars.

More-Difficult Star Mode
If you get 1,000 points in modern mode , you will unlock the ''More-Difficult Star Mode''.

Museum Games
You can unlock 9 games in the Museum. This option appears in the Gallery Corner. There are no modern versions for the games in the museum.

Bombsweeper - Get 40 stars to see it, and 120 stars to play it.

Climber - Get 45 stars to see it, and 130 stars to play it.

Lifeboat - Get 55 stars to see it, and 150 stars to play it.

Manhole - Get 10 stars to see it, and 80 stars to play it.

Mario's Bombs Away - Get 25 stars to see it, and 100 stars to play it.

Parachute - Get 30 stars to see it, and 110 stars to play it.

Safebuster - Get 50 stars to see it, and 140 stars to play it.

Tropical Fish - Get 15 stars to see it, and 90 stars to play it.

Zelda - Get 60 stars to see it, and 160 stars to play it.

Secret Games
There are 5 secret games in Game & Watch Gallery 4. To unlock them, you must get a certain number of stars:

Chef - Get 5 stars

Donkey Kong - Get 35 stars

Fire Attack - Get 65 stars

Mario Bros. - Get 20 stars

Octopus - Get 50 stars

Unlock Credits
Get 170 stars

Secrets

Hidden Music in Octopus.
Listen carefully to the 'back beat' of the music in the modern Octupus game. You'll notice it's exactly the same as the first level in the Arcade classic Popeye by Nintendo!

Donkey Kong's also present in this neat collection: