Caltron Inustries Inc. was a Taiwan-based video game company that produced at least one unlicensed cartridge for the Nintendo Entertainment System (NES), and developed multiple others. There is a direct link between Caltron Ind. Inc. and the video game companies NTDEC and MegaSoft. All three are believed to be the same company. This company developed more than twenty original games released worldwide, some in the form of unlicensed Famicom cartridges, and some in the form of unlicensed NES cartridges.