Sigma

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Sigma, Sigma Enterprises, Sigma Pro-Tech, or ∑ Pro-Tech () is/was a Japanese game company. Very little is known about them as their corporate name is too generic to pin-point, the history of Japanese game companies isn't well-documented in English, they may not exist anymore, etc. (or any combination of these).

Known Softography

This list might be incomplete; please help expand it.

Mega Drive

• Zoom! (1990)
• Psy-O-Blade (1990)
• Shiten Myouou (1990)