Raiden Fighters 2: Operation Hell Dive is a vertical-scrolling shoot-'em-up developed and released by Seibu Kaihatsu (along with Fabtek in the North America release) for arcades (using their Seibu SPI hardware) in 1997.
The sequel to Raiden Fighters, Raiden Fighters 2 revamps the aircraft roster while introducing the Hybrid Attack (where both players can combine their charged attacks into an invincible super-powered energy beam).
Similar to the rest of the series, it was included in two compilations: the 2019 Raiden Fighters Aces and the 2012 Raiden Legacy.
The game includes 15 playable aircraft, each with their own performance and weaponry. Eight of them are available by default:
- Aegis IV
- Beast Wing
- Chaser 2000
- Death Header
- Flying Ray
The remaining eight aircraft are hidden, normally requiring a cheat code to access. Seven of them are made available without cheat codes through specific arcade configurations.
- Hell Diver - Fast maneuvering.
- Raiden mk-II - Originally from Raiden II / Raiden DX. Very slow maneuvering. Does not use a "main cannon", instead using both sub-weapons simultaneously. Its Laser sub-weapon fires twin plasma shots at a fast rate, with upgrades transforming it into a continuous plasma beam that sways with the ship and locks-onto enemies. Its Missile sub-weapon launches volleys of homing missiles. Cannot use charged attacks and uses a unique Bomb attack based on their corresponding game's.
- Judge Spear - Originally from Viper Phase-1. Insanely fast maneuvering. Does not use a "main cannon", instead using both sub-weapons simultaneously. Its sub-weapons are fast-firing but all fire in a straight spread in front of the ship, with the Laser firing multiple vulcan shots at a faster pace and the Missile firing twin missiles at a slower pace. Cannot use charged attacks and uses a unique Bomb attack based on their corresponding game's.
- Raiden mk-IIβ - An alternate version of the Raiden mk-II. Average maneuvering. Its Laser sub-weapon fires volleys of vulcan shots in a wide arc while its Missile sub-weapon fires volleys of cruise missiles.
- Blue Javelin - An alternate version of the Judge Spear. Fast maneuvering. Its Laser sub-weapon fires vulcan shots in an arc, while the Missile fires multiple bursts of missiles at multiple angles.
- Miclus - Seibu Kaihatsu's mascot and a hidden target in the Raiden series. Average movement. Its weaponry is unique in that it doesn't use sub-weapons at all, only rapidly spitting fireballs in an arc from the upgradable "main cannon". Its Slave companion ships are also replaced with fairies (which are hidden power-ups in the Raiden series) and its Bomb is replaced with a continuous flamethrower burst (which can sway with player movement).
- Aegis II-C - An alternate version of the Aegis IV. While its sub-weapons are much faster-firing, it cannot use charged attacks.
- Dark Sword - A hidden alternate version of the Judge Spear and Blue Javelin, only playable with a cheat code. The fastest ship in the entire game, even beyond the Judge Spear, with the Laser sub-weapon of the Judge Spear and the Missile sub-weapon of the Blue Javelin.
In addition, through a special cheat code, players can play as a hidden "Slave" variant of their currently selected aircraft. While they share the same appearance as the ship's companions (and thus have a smaller hitbox) and share the ship's maneuvering speed, all variants have the same weaponry (based on the companion ship's high-powered shots, with no sub-weapons or charged attacks).