Bio-Hazard Battle (Prototype)

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Title Screen
Bio-Hazard Battle (Prototype)
Dump status Released
Dumped by Modern Vintage Gamer
Released by Modern Vintage Gamer
File release date March 29, 2021
Origin EPROM cartridge
Dump method Retrode 2
Game Bio-Hazard Battle
System Sega Mega Drive
Genre Shooting
Release date JP Oct 30, 1992
US Dec 1992
EU Nov 1992
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An early prototype of Bio-Hazard Battle (also known as Crying: Aseimei Sensou) for the Sega Mega Drive.

The Cutting Room Floor research


  • Different header.
  • Build possibly from 1991.
  • SEGA logo lacks the trademark symbol. The screen also lacks the title screen music.
  • Title screen lacks copyright and trademark symbol.
  • Main menu has a modem option on the menu that can't be accessed. You cannot access the options menu in this build.
  • The HUD uses a slightly different palette and contains a border that goes unused in the final build.



  • Special thanks to Modern Vintage Gamer for dumping this prototype!

See also