NTDEC

NTDEC (whose full name is Nintendo Electronic Co. (Chinese: 任天堂電子有限公司)), was a Taiwanese manufacturer of cartridges, accessories and original games for NES and Famicom.

NTDEC produced a large number of unlicensed video game copies between 1989 and 1991, which were sold in Asia and in the United States via mail order.

Unusual among counterfeit cartridge manufacturers, they're often identifiable through the company logo on it and the in-game copyright notice modified to read "NTDEC", as well as the rear label featuring a green "QUALITY GUARANTY" [sic] stripe.

Between 1991 and 1993, NTDEC developed and published a number of original games in Asia, some of which were distributed in parts of South America and Europe.

Many of these were credited to Mega Soft, a California-based company which was listed in Nintendo of America, Inc. v. NTDEC as their North American distribution arm.