Tristia of the Deep-Blue Sea (Japanese: 蒼い海のトリスティア, Hepburn: Aoi Umi no Torisutia) is a PS2, PSP, and PC game, developed by Kogado Studio.
The story has been adapted into an OVA, and has been released with a title of "發明工坊" in China, Hong Kong, Taiwan, U.S.A., Russia, and Poland.
The player takes the role of Nanoca Flanka and must build an array of technological gadgets using schematics and various raw materials that can be encountered in-game, and sell them to people of Tristia.
Tristia was a beautiful seaside town that slowly fell into ruin and dilapidation after being invaded by a dragon ten years before the start of the game.
Hopeless, the people decided to send for Prospero Flanca, a legendary inventor who was well known for reviving many dying cities.