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Mendel Palace

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Title Screen

Mendel Palace

Also known as: Quinty (JP)
Developer: Game Freak
Publishers: Namco (JP), Hudson Soft (US)
Platform: NES
Released in JP: June 27, 1989
Released in US: October 1990


DebugIcon.png This game has debugging material.
LevelSelectIcon.png This game has a hidden level select.
RegionIcon.png This game has regional differences.


Mendel Palace is a game about pushing tiles and knocking bad guys into walls. It also happens to be the first game Game Freak ever made. Perhaps you've heard of them?

Debugging Features

Debug Menu

WELCOME TO BUG WORLD

Enter the Game Genie code ZAKLSGAA, then hold B and press Start at the title screen to activate the debug menu. The options are as follows:

  • DEATH/NO DEATH: Turns invincibility on or off.
  • NUMBER OF PLAYER: Number of lives to start the game with.
  • SCENE NUMBER: Select a level to play. The first number determines whether the "EXTRA" levels are active (0=no, 1=yes), and can be changed by pressing Select.

Moving the cursor up past DEATH/NO DEATH allows you to change the current tileset, character sprite, and character palette.

Warp to Final Level

Enter the Game Genie code AKNUOGAA, then hold Left and press Start at the title screen menu to warp to the final castle.

Unknown

Hmmm...
To do:
Is this all the code does?

Enter the Game Genie code AGEUUIAA, then hold Right and press Start at the title screen menu. This marks the fortress at the center-right of the map as cleared.

In-Game Debugging Features

Enter the Game Genie codes AUKXYXXT + LESZAXXT, then hold B and press A at the title screen menu to enable a few in-game debugging features.

At any time during the game:

  • Reset: Press Start + Select to reset the game.

While the game is paused:

  • Frame advance: Press Start to advance one frame. Press Select to unpause.
  • Swap layers + 98 Stars: Hold Down and press Select to swap the playfield layers and set the Star counter to 98.
(Source: BMF54123)

Crash Dump

Uh oh.

In the Japanese version of the game, if a BRK opcode is executed as the result of a program crash, the game will write a number of CPU registers and RAM variables to the screen before going into an infinite loop. The numbers displayed are as follows:

  • Line 1: Stack pointer, accumulator, X register, Y register, processor status register.
  • Lines 2-13: Contents of the stack.
  • Lines 14-15: Scratchpad RAM ($00-$09).
(Source: BMF54123)

Regional Differences

Japan America
Quinty (NES)-title screen.png Mendel Palace-title.png

The title screen was completely changed for the US release, displaying art of the game's enemy characters.