Akira (Prototype)

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Title Screen
Akira (Prototype)
Dump status Released
Dumped by drx
Released by drx
File release date December 25, 2019
Origin EPROMs
Dump method Retrode 2, True-USB PRO GQ-4X
Game Akira
System Sega Mega Drive
Genre Action
Release date Unreleased
Download Akira (Prototype) (info, raw dump)

An early prototype of the unreleased Akira for the Sega Mega Drive.

Notes

  • This specific build was burnt on two PCBs, one working and one partially working. Upon dumping both PCBs, it was discovered that one of the later EPROMs on the non working one was a duplicate burn of one of the first EPROM chips but is otherwise exactly the same as the working PCB. The working prototype was dumped multiple times with a Retrode 2. Each dump was consistent in terms of calculated checksum. The EPROMs that make up the working prototype were dumped individually with an EPROM programmer to ensure that the EPROMs had no issue.
  • Approximately 65% of the ROMs contents can be accessed within the game itself according to a code/data log analysis. The other 35% is non-null data containing unused sprites and other data.
  • Developed by Black Pearl Software in 1993 with an intended release for 1995.
  • Earlier than the demo present at the Summer Consumer Electronic Show of 1994 (SCES 1994).
  • A lot of music cues are present in the sound test but are unused by the game itself.
  • None of the levels can be completed in this prototype.
  • You can go back to the level select at any time by pressing start.
  • Level 1K/1T lack enemies.
  • The game is prone to crashing around the starting area on level 2T.
  • The cutscene that plays before 1K/1T are the same.
  • There is no cutscene before 4K.
  • The game freezes upon loading into the fifth stage.

Screenshots

Videos

Files

File Type Date Size SHA-1
Akira (Prototype).md File 1990-11-21 08:00:00 2 MB 27dbe96f5478e37e48817fb48a7a06c10f603090

Header

00000100 53 45 47 41 20 47 45 4e 45 53 49 53 20 20 20 20 SEGA GENESIS 00000110 28 43 29 4e 55 46 58 20 31 39 39 31 2e 41 55 47 (C)NUFX 1991.AUG 00000120 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 DDDDDDDDDDDDDDDD 00000130 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 44 DDDDDDDDDDDDDDDD 00000140 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 00000150 4f 4f 4f 4f 4f 4f 4f 4f 4f 4f 4f 4f 4f 4f 4f 4f OOOOOOOOOOOOOOOO 00000160 4f 4f 4f 4f 4f 4f 4f 4f 4f 4f 4f 4f 4f 4f 4f 4f OOOOOOOOOOOOOOOO 00000170 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 00000180 47 4d 20 58 58 58 58 58 58 58 58 2d 58 58 00 00 GM XXXXXXXX-XX.. 00000190 4a 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 J 000001a0 00 00 00 00 00 1f ff ff 00 ff 00 00 00 ff ff ff ................ 000001b0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 000001c0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 000001d0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 000001e0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 000001f0 55 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 U


Origin

See also