From Wikipedia
"Kemco Corporation (株式会社ケムコ Kabushikigaisha Kemuko), sometimes referred to as Kotobuki System Co., Ltd., is a Japanese video game developer and publisher established in 1984 as a subsidiary of Kotobuki Engineering & Manufacturing Co., Ltd, located in: Seika, Japan.
Kemco was one of the original Nintendo licensees and began to manufacture games for the NES in 1985. In 2001 Kemco U.S.A, Inc. was founded as a wholly owned subsidiary of Kemco of Japan, especially targeting the North American and PAL Region markets.
One of their best known franchises is the Top Gear series. They are also known for their ports of the MacVenture adventure games to Nintendo consoles."