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XX Mission

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Title Screen

XX Mission

Developer: UPL
Publisher: UPL
Platforms: Arcade (Custom)
Released internationally: July 1986


CopyrightIcon.png This game has hidden developer credits.
GraphicsIcon.png This game has unused graphics.


XX Mission is a standard shoot 'em up with no stand-out features. It might have been more interesting with an additional X.

Hidden Credits

ALT TEXT MAKE
There's a set of credits (and a build date) hidden in the game that can be accessed by entering and activating the following code in MAME's xxmissio.xml cheat file.

  <cheat desc="Game Credits">
    <script state="on">
      <action>maincpu.pb@E146=01</action>
    </script>
    <script state="off">
      <action>maincpu.pb@E146=00</action>
    </script>
  </cheat>

Not content with having just one set of hidden credits, another is stored in the sub-CPU starting at 0x00FC:

 Music,effect and Produce By T.fujisawa 
 Software By S.Satoh 
 Desing By A.tsunoda and T.fujisawa 
 1986 UPL Limited !

Seriously, good job on that sound create
Since you can never credit Tsutomu Fuzisawa enough, there's an additional credit in the object graphics bank.

(XX Source: Original TCRF research)