Kuhga (空牙, Air Fang) is a series of futuristic, military-themed Shoot 'em Ups by Data East. The series is known for it's intense action and hard rock soundtrack. The games received ports for the Mega Drive and Sega Saturn, but those remained Japan-exclusive.
The plot of Kuhga focuses on the DAGGER/Ragnarok (sometimes misspelled Lagnalok) terrorist group, which attempts to take over the world by using it's military might. Aside from the second game, gameplay is vertically-scrolling, with the usual power-up pickups which strengthen your weapons and smart bombs, but you're also able to collect a cyber unit which is attached to your fighter, raising firepower considerably but also making your ship a bigger target for enemies.