A new feature introduced in Raiden Fighters 2 is the Hybrid Attack, available only during a two-player game.

This game includes seven aircraft, which are retooled versions of the Raiden Fighters craft.

The secret fighters in this game are unlocked the longer the arcade machine has been running since initial boot-up.

Newer single-PCB versions of the game eliminate the time-based unlocking mechanic and make all the fighters available from the start.

[1] In response, retooled fighters were deployed in a new mission called Operation Hell Dive.

[2] The music of Raiden Fighters 2 is composed in the techno style with some instances of drum and bass (the theme of the boss stages).

The later Raiden Fighters 2 - 2000 Operation Hell Dive clone runs on cheaper hardware and features notoriously inferior sound than the original.