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Galaxy Force II (Arcade)

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Title Screen

Galaxy Force II

Developer: Sega AM2
Publisher: Sega
Platform: Arcade (Sega Y Board)
Released internationally: 1988

DevTextIcon.png This game has hidden development-related text.
SoundIcon.png This game has unused sounds.
RegionIcon.png This game has regional differences.

NotesIcon.png This game has a notes page

Note: all MAME cheats (not sure about button codes), sound codes, and ROM locations apply to the gforce2 set in MAME
To do:
  • Check the other MAME sets
  • The subx ROM appears to have all the sprite data alongside their names in the game's internal string encoding?
    • cosY in the ysprites ROM? I highly doubt this is anything.


Unused Sounds

Hidden Messages

There are two hidden messages in the game, both saying similar things.

GalaxyForceII Arcade Message1.png

The first is easy to trigger: simply hold Shot + Missile + Start during the demo roll without the on-screen control guide (that is, the odd-numbered demos). The message from SEGA and Debutta boys will appear over the Energy meter.

The second does not appear to be accessible in-game. It is stored at $15180 in the suby ROM in the game's text format and reads WE ARE DEBUTTA BOYS. Code to draw it exists at $1513C in the suby ROM, but does not appear to ever be called (and where it would be called from is unknown). To make matters worse, code at $7EBE in the suby ROM uses $15180 as a value in a calculation!

Elementary, my dear Cactus.
This needs some investigation.
Discuss ideas and findings on the talk page.

Regional Differences

The Japanese versions do not allow you to continue when you die. The international version does, however only on the first five missions (if you die on the last, it's game over regardless of how many credits you have inserted). As a result, some ports (like the Genesis one) do not allow continues while others (like the Commodore 64 port) do.