Twin Cobra, known in Japan as Kyūkyoku Tiger (究極タイガー?), is a 1987 helicopter-themed shoot 'em up arcade game developed by Toaplan. It was published by Taito Corporation in Japan, and by Romstar in North America, and is one of Toaplan's most popular arcade games. It is also a spiritual sequel to Tiger Heli while it is followed by Twin Cobra II. Source: Wikipedia, "Twin Cobra", available under the CC-BY-SA License.