Mysterium (Jan 23, 1991 prototype)

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Title Screen
Mysterium (Jan 23, 1991 prototype)
Version VERSION 1.00AI
Build date Jan 23, 1991
Dump status Released
Dumped by Armageddon Potato
Released by Hidden Palace
File release date January 1, 2025
Game Mysterium
System Game Boy
Genre Role-playing
Release date US Jul 1991
JP Jul 23, 1993
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A prototype of Mysterium for the Game Boy.

Notes

  • The licensing screen contains quite a few differences: In the prototype it has no mentions of any copyrights or license holders but instead contains a list of everyone who worked on the game. Displayed at the bottom is also a date and version number, January 23rd Version 1.00AI.
  • The ROM has no header title.
  • When a comma is used in any text, it’s placed one pixel higher than the retail version which can make text look odd.
  • The title graphic does not yet contain a trademark symbol.
  • The HUD doesn’t contain the arrow yet.
  • The torch doesn’t appear on the floor in the first room.
  • Looking through the graphics data, a few tiles/objects haven’t yet been implemented.

Acknowledgments

A huge thanks to Armageddon Potato for this bountiful lot as well as togemet2 for documenting and analyzing parts of the lot!

See also