Delphine Software International (DSI) was created in 1988 as a part of the Delphine Group and was initially based in Paris. It was headed by Paul de Senneville, and co-directed by Paul Cuisset, who was the company lead designer.
In 1993, a subsidiary company named Adeline Software International was created. In 2001, Delphine Software International relocated to Saint-Ouen. In December 2002, the company was removed from the Delphine Group. In February 2003, Delphine Software was sold to Doki Denki. The company closed down in July 2004 after bankruptcy and liquidation. Their official website has since shut down. As a consequence, the subsidiary company, Adeline, had also shut down around the same time.
In 2007, rumours spread that Flashback designer, Paul Cuisset was working on a Wii title with Eric Viennot, who divulged the information on his blog. However, little is known of the game, as he has not mentioned the title, genre or storyline. Cuisset is today one of the founders of the game studio VectorCell, which he co-owns with the French game studio Lexis Numerique.