Metal Slug done by the same company as Digimon Adventure. Fun times for everyone!
Command-Line Text#
Positions $00 through $67, which in Game Boy games are used for RST and interrupt instructions, have some text data in them that looks to be out of a command-line interface. It looks like when preparing this game for release, Sintax screwed up and left their own build commands inside it. This is more perceptible by the fact that every character starting an 8-byte field was overwritten by the byte of the instruction placed for that field. The text that can be made out is:
COPY ?G_SCR.GBC SONIC?.GBC
G?_32 SONIC1.GBC SONIC3?.GBC D???DAT
(Characters replaced by instructions are boldened and are only guesses. "?" denotes characters whose original form is unknown and likely not an actual question mark in the original text.)
(Source: Gmestanley)
Revisional Differences#
Later on, Sintax late reskinned the game as a James Bond-themed one, titled Jue Dui Wu Li (which confusingly is also the Chinese name of Counter-Strike).
(Source: Handheld Underground)
The unused command-line leftover text is still here, unchanged.
(Source: Gmestanley)
Oddities#
All of the background musics are copies from Lemmings & Oh No! More Lemmings(Game Boy Color). These musics are being used in many games which development by Sintax.