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Bloxeed (System C)

From The Cutting Room Floor
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Title Screen


Developer: Sega AM1
Publisher: Sega
Platform: Arcade (Sega System C)
Released internationally: 1989

DevMessageIcon.png This game has a hidden developer message.
BonusIcon.png This game has hidden bonus content.

Bloxeed is an arcade Tetris variant with some interesting gimmicks. Whereas the System 18 version was Japan-only, the System C version was released worldwide.


You'll need to interleave the two 68000 data ROMs in the MAME bloxeedc ROM set; epr-12908.ic32 for even bytes and epr-12907.ic31 for odd. Use Neil Corlett's byteshuf utility if you're not sure what to use. This version of the game doesn't use any encryption whatsoever, unlike its System 18 predecessor.

Hidden Message

There's a strange message at $C754:


There's a hard tab between RUSSIAN'S and ASS instead of a space for some reason. It's unknown if the older System 18 version has this message as well.

Name Entry Miscellanea

There are various secret names you can enter when you get a high score:

  • Enter a high score name of "KEN"; your slot and the next one will become "MIC" and "LUV", respectively.
  • Enter a high score name of "SEX"; your slot and the next one will become "OH!" and " NO", respectively. (The " NO" contains an initial space.)
  • Enter a high score name of "MOR"; your slot and the next two will become "YAM", "AGI", and "WA!", respectively.
  • If you enter no name (just scroll to END and press the button), the game will fill your name with "NOP".

The subroutine handling the detection of these names is located at $BE90.

Display Checksum

In the service menu, if you hold down the Service 1 button (the "9" key, not number pad, in MAME; it adds a credit outside the service menu), Player 1 Down, and Player 2 Right simultaneously as you press the Service button (F2 in MAME), and KEEP THOSE THREE BUTTONS HELD DOWN (release them, and the checksum display won't be complete), you'll see the actual checksum of the various memory chips along with information telling you if the check was successful.

The checksum is shown as four four-digit hexadecimal numbers; the checksum it checks against is stored at $3F0 as 4 words (8 bytes).