Ghostbusters (Genesis)

Finally! A Ghostbusters game that isn't a port of the David Crane computer game! And it only took...roughly ten years?!

Unused Item?
The string DRILL can be found at address in the first version of the ROM and  in the second, which is in the middle of the item shop inventory text. The drill was likely meant to be used to break the ice blocks in the Apartment stage at one point. In the final version, a few beam shots can clear them away.

Player Select Stats
At the player select, if the system is a Japanese system, both versions of the game refer to the "defense" stat as "Armer" (sic). On all other Genesis regions, the earlier revision of the game calls the stat "Endurance", while the later revision changes it to "Stamina".

In both versions, "Push trigger" in the Japanese region setting becomes "Press trigger" in the international settings.