Uchuu Senkan Gomora (Genesis)

Uchuu Senkan Gomora is the Japanese name of Bio-Ship Paladin, a shoot-'em-up by UPL. While ported to the Sega Genesis, it was never released outside Japan.

Debug Menu
On bootup, the game checks the word at, which is. If you change this to a non-zero value by using game enhancer code (Action Replay) or AEAA-EAAA (Game Genie), debug mode is enabled. Memory address gets set to.

Now, start the game, and hold C as you press Start to pause. This menu appears:



Settings

 * JUDGE - invincibility when turned off
 * ENDING - view ending
 * GENESIS - region setting?
 * STAGE - stage select
 * AUTO - automatically targets and fires upon enemies
 * BIT - unknown, possibly unused
 * HOT START - reset game

US Title Screen
If you set the system region to USA on boot, you get what is clearly a US title screen for a possible release that never happened (if it even was planned).

A Possible Theory: At the time, Treco (a Sammy imprint) had the rights to UPL's properties as UPL had gone bankrupt. For whatever reason, Treco didn't publish this game; if this was considered for publication, it was most likely passed up in favor of Task Force Harrier EX, another shoot-'em-up released around the same time and developed by UPL. The Treco logo, if it exists in the ROM, has not yet been found.