Fiver Firm (五合企業有限公司) also known as Namco Co., Ltd, was a Taiwanese game publisher. Its sole known credited release under the Fiver Firm name is the Game Boy Color fighting game E'fighter HOT, dating from around 2000-2001. As Namco Corporation, they published Dian Shi Ma Li (Big TV Mary Bar) for the Famicom in 1989. Their activities in the intervening period currently remain unknown. Despite their original name being called "Namco Corporation", the company has no relations with the Japan video game developer of the same name (now known as Bandai Namco Entertainment).