Ms. Pac-Man (NES, Namco)
Ms. Pac-Man (NES, Namco)
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| Ms. Pac-Man |
|---|
Developer:
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Namco's NES Ms. Pac-Man is a port of an unofficial-made-official hack. Also featuring the world's first video game heroine!
Contents
1 Developer Credit
2 Unused Mazes
3 Debug Mode
3.1 Debug Menu
3.1.1 CHR TEST
3.1.2 OBJ TEST
3.1.3 SOUND TEST
Developer Credit
The reset routine uses the string "NAOKI HIGASHIO" to check if the game was soft or hard reset. Naoki Higashio was a programmer from Now Production, the company that developed this port.
Unused Mazes
Of the seventeen maze layouts stored in the ROM, only eight are actually referenced in the maze pointer table, leaving a whopping nine mazes unused and inaccessible via normal means. Several of these mazes have very strange, asymmetrical designs, and one has no internal walls at all. For some reason, the data for the seventeenth maze (at $A926) is not compressed, perhaps indicating that it is a fairly old leftover.
The Game Genie codes listed below will replace the first maze with the corresponding unused maze. If you'd prefer to modify the ROM instead, change the pointer at $896A (0x97A in the ROM file) to the appropriate address.
| Maze | Game Genie code | ROM address |
|---|---|---|
![]() | SATEXP + EPTEUO | $9885 |
![]() | LGTEXP + XPTEUO | $9A43 |
![]() | SATEXO + UPTEUO | $9B8D |
![]() | UITEXO + VPTEUO | $9EDB |
![]() | ELTEXP + EZTEUP | $A0B0 |
![]() | YTTEXP + XZTEUP | $A267 |
![]() | AZTEXP + KZTEUP | $A420 |
![]() | YYTEXO + NZTEUP | $A77F |
![]() | TZTEXP + OZTEUO | $A926 |
Debug Mode

Use Game Genie code EEOGAAAA (0x40A0 = 80 in a headered ROM) to enable the debug mode. This unlocks a variety of features:
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Debug Menu

Press Select + A at the title screen to open the debug menu.
CHR TEST

Use the D-Pad to scroll the screen vertically or horizontally. You can also change the colors, though it's a bit tricky: while holding Select, press Up or Down to select a background palette entry, and then press A or B to change it. You can edit all 16 background palette entries, though only the first palette is actually visible. Press Start to return to the main menu.
While the final game doesn't use any mappers, the CHR viewer does have some extra functionality that only works if the game is running on an MMC3 board: you can press A or B to cycle through the game's CHR banks.
OBJ TEST

Use the D-Pad to move the object around the screen. Press A or B to cycle through objects, or Start to exit to the main menu. Note that most of the object values are invalid and may crash the game.
SOUND TEST

Press Up or Down to change the sound number, and A to play it. Selecting any value above 20 will crash the game.
| The Pac-Man series | |
|---|---|
| Arcade | Pac-Man • Ms. Pac-Man • Super Pac-Man • Professor Pac-Man • Pac & Pal • Jr. Pac-Man • Pac-Land • Pac-Mania • Ms. Pac-Man & Galaga: 20 Year Reunion • Pac-Man: 25th Anniversary Edition |
| Atari 5200 | Ms. Pac-Man |
| DOS | Pac-Man (1983) • Pac-in-Time |
| Intellivision | Pac-Man |
| NES | Pac-Man • Pac-Land • Ms. Pac-Man (Tengen, Namco) |
| TurboGrafx-16 | Pac-Land |
| Game Boy (Color) | Pac-Man • Pac-Attack • Pac-in-Time • Pac-Man: Special Color Edition • Ms. Pac-Man: Special Color Edition |
| Sega Master System | Ms. Pac-Man |
| Genesis | Pac-Mania • Ms. Pac-Man • Pac-Attack • Pac-Man 2: The New Adventures |
| SNES | Pac-Attack • Pac-Man 2: The New Adventures • Pac-in-Time • Ms. Pac-Man (Prototype) |
| Mac OS Classic | Pac-in-Time |
| CD-i | Pac-Panic |
| Windows | Pac-Man: Adventures in Time • Ms. Pac-Man: Quest for the Golden Maze • Pac-Man All Stars • Pac-Man World 2 • Pac-Man Championship Edition DX |
| Nintendo 64 | Ms. Pac-Man Maze Madness |
| Game Boy Advance | Pac-Man Collection • Ms. Pac-Man: Maze Madness • Pac-Man World 2 |
| PlayStation 2 | Pac-Man World 2 |
| GameCube | Pac-Man World 2 • Pac-Man Vs. • Pac-Man World Rally |
| Xbox | Pac-Man World 2 |
| Nintendo DS | Pac-Man World 3 |
| iOS | Pac-Man (2008, 2013) • Pac-Man Remix |
| Plug & Play | Pac-Man |
| Xbox 360 | Pac-Man Championship Edition DX |
| PlayStation 3 | Pac-Man Championship Edition DX |
Categories:
- Games developed by Now Production
- Games published by Namco
- NES games
- Games released in 1993
- Games with unused areas
- Games with hidden developer credits
- Games with debugging functions
- Games with hidden sound tests
- Games with hidden level selects
- Pac-Man series
Games > Games by content > Games with debugging functions
Games > Games by content > Games with hidden developer credits
Games > Games by content > Games with hidden level selects
Games > Games by content > Games with hidden sound tests
Games > Games by content > Games with unused areas
Games > Games by developer > Games developed by Now Production
Games > Games by platform > NES games
Games > Games by publisher > Games published by Bandai Namco Entertainment > Games published by Bandai Namco Games > Games published by Namco
Games > Games by release date > Games released in 1993
Games > Games by series > Pac-Man series
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