Source: http://www.megalextoria.com/wordpress/index.php/2017/05/10/deep-blue-turbografx-16/
Deep Blue is another shooter released exclusively on the TurboGrafx-16. It was released by Pack-In-Video/NEC in 1990 (1989 in Japan). This style of game was even more popular in Japan than North America so it isn't surprising to see a bunch of them on the TG-16. Uniquely, Deep Blue has a nautical theme in which the player controls an Angel Fish.
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