Seicross, known in Japan as Sector Zone (セクターゾーン, Sekutā Zōn?), is an arcade game developed and released in Japan and North America by Nichibutsu. Despite the original arcade being titled Sector Zone, Nichibutsu later ported it to the Famicom as Seicross (セクロス?). This port was also published in North America for the Nintendo Entertainment System by FCI.