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Air Buster (Genesis)

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Title Screen

Air Buster

Also known as: Aero Blasters (JP)
Developer: Inter State Software
Publisher: Kaneko
Platform: Genesis
Released in JP: January 31, 1991
Released in US: 1991

CodeIcon.png This game has unused code.
RegionIcon.png This game has regional differences.

Air Buster is a typical shoot-em-up with some above-average graphics. Depending on the region you're in, you may either bust or blast the air.

Unused Checksum

Located at $000318-000343 is code to run a checksum and compare the result to the value stored at $00018E, which is seen in many Genesis titles. In this game, it's branched over instead. Even if the block of code were to execute, the branch that determines the checksum status was replaced with a two 4E 71 NOP commands.

Unused Configuration Mode Branch

The Configuration Mode has seven available selections, but the jump table that executes the code for each includes an 8th branch command that goes unused. It's located at $001434 in Aero Blasters and $001414 in Air Buster. It branches to the same address as the previous entry, which is the programming to exit Configuration Mode.

Regional Differences

Japan US
AeroBlastersMD-JPtitle.png Air Buster Genesis-title.png

The US logo is smaller compared to the Japanese version, merges the title into one row, changes the planes in the top right, removes the smaller Aero Blasters entirely, and changes the font of Trouble Specialty among several other small changes.