Thunder Force (サンダーフォース Sandā Fōsu) is a free-roaming scrolling shooter computer game released by Technosoft in 1983. It is the first game in the Thunder Force series. It was initially released for the Sharp X1 computer, and later appeared on the Sharp MZ-1500, NEC PC-6001 mkII, and in 1985 on the NEC PC-8801 mkII. In 1984, it was released for the FM-7 and NEC PC-9801 computers as Thunder Force Construction, featuring an add-on that allowed players to create custom made areas, like a level editor or game creation system.