Sigma Enterprises, Inc., aka Sigma Shoji Co., Ltd. (シグマ商事株式会社) was a Japanese game publisher.
Sigma Enterprises: 7 games developed and 7 published from 1980 to 1992.
Official websiteSigma Enterprises, Inc., aka Sigma Shoji Co., Ltd. (シグマ商事株式会社) was a Japanese game publisher.
