Deep Sea Adventure: Kaitei Kyuu Panthalassa no Nazo

Your father has mysteriously disappeared while carrying out his ocean studies. You, a young boy named Chris, must venture forth in your minisub and search for poppy. Explore underwater wreckage in a submarine that may be upgraded with better equipment in your search for sunken treasure. Equipment and exploration budgets may be filled to capacity if the coffers are enriched with newfound treasure. Encounter undersea cities, and denizens, and battle enemy pirates in this 3-D adventure.

Deep Sea Adventure is an action rpg game in which the player controls a young boy who pilots a submarine and has to explore the seas in search of old artifacts and treasures. In his adventure, he will have to face the dangers of the sea and battle against sharks and other dangers. He will also visit towns in his quest.