Metroid

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Metroid
Developer: Nintendo R&D1 Publisher: Nintendo Platform: NES Released in JP: August 6, 1986 Released in US: August 15, 1987 Released in EU: January 15, 1988 This game has a prerelease article

The first Metroid game, with no map or save points. Have fun!

Debug Features

In the password screen, enter this password (just entering NARPAS SWORD and hitting start is enough):

NARPAS SWORD0
000000 000000

This will send you to the start of the game with the following debug features enabled:

• Infinite health, in that the tens digit of your health never changes. You can still get hit and take damage, it just don't have much effect.
• Infinite missiles. The missile display is turned off, but you can still shoot them to your heart's content.
• Ice Beam equipped. Strangely, this uses the Wave Beam's graphic with the Ice Beam's palette. This never happens normally.
• All items obtained.

PROTIP: If you intend to beat the game with this password, it would be wise to pick up at least one missile container first. If you kill a Metroid without obtaining a missile container, and it attempts to drop a missile pickup, the game will freeze. Alternatively, you can just avoid shooting Metroids altogether. This glitch was not fixed in any of the later rereleases of the game (e.g. the one included with Metroid Prime), possibly because Nintendo wasn't even aware of the code's existence.