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Vapor Trail: Hyper Offense Formation, known in Japan as Kuhga - Operation Code Vapor Trail (空牙 - Operation Code Vapor Trail) and usually simply referred to as Vapor Trail, is a 1989 shoot 'em up arcade game developed and published by Data East. Vapor Trail was followed by Wolf Fang and Skull Fang Kuhga Gaiden.
1999: A terrorist organization known only as DAGGER has occupied the city of New York where they have hacked into military defenses world-wide, established their own military command and gained access to nuclear missile silos. They hold the world hostage in this position and promise to cancel their threats of destroying the Earth only until the world's governments relinquish their power to DAGGER.
A Special Forces Air Unit is called in to attack DAGGER and cripple their strongest defenses and headquarters in New York. Until then, the city remains silent. The organization name was actually changed from the Japanese original Ragnarok.
The game features 2 players controlling the jet fighters simultaneously for battle across numerous levels. There are 3 types of jets varying from different classes of speeds and firepower. The Silph is the midrange plane with the most balance. While the Valkyrie carries the most firepower, and the Seylen jet is capable of flying at the highest mach speed. Weapon upgrades are available throughout the game, ranging from homing missiles, ring guns, flame throwers and many more. Each jet may also activate the shield manually in times of trouble.
Players have a choice between four different standard pick-up weapons: Vulcan - the player's default weapon which fires straight forward, but can flare out to destroy larger groups of enemies depending on the jet selected. Bombs - a straight firing, explosive weapon that retains the same firing pattern for all jets, but increases in launch count (number of times it can be fired at once) when upgraded. Defender - an explosive cluster-shot weapon that encircles the player's jet and remains the same when upgraded, but increases in count much like the Bombs. Missiles - homing missiles that fire from multiple directions of the jet. Similar to the Vulcan, the Missiles fire in different directions depending on the jet that is used.
Every jet is equipped with a roll device that allows them to kamikaze safely into other jets. The roll must be re-charged after every use.
Players also have the choice to pick-up the S-Unit, a weapon attachment that empowers the jet's firing no matter what weapon is picked-up previously and every jet's S-Unit attack differs from the others.
Silph S-Unit: Fires diagonal wave shots in a V formation.
Valkyrie's S-Unit: Fires rapid-fire flame blasts in a straight direction.
Seylen's S-Unit: Fires an array of arrow-head shots with four firing from the front, two firing from the sides and front and two firing from behind.
Once the S-Unit is equipped, the player cannot use their previous weapons unless the S-Unit is detonated. Detonating the S-Unit does not harm the player, but it does harm the enemy as the unit will detonate in a large and powerful explosion.
Vapor Trail was later ported to the Sega Genesis/Mega Drive in 1991. This port was very close to the arcade counterpart despite much stricter hardware and color limitations. Even the display ratio was maintained during conversion with the addition of the side bars.
- ↑ Lesser, Hartley, Patricia, and Kirk (February 1992). "The Role of Computers". Dragon (178): 57–64.
- Vapor Trail (Arcade version) at GameFAQs
- Vapor Trail series at Hardcore Gaming 101
- Vapor Trail: Hyper Offence Formation at Museum of the Game
- Vapor Trail: Hyper Offence Formation at arcade-history
- Kuhga - Operation Code Vapor Trail at arcade-history