A free program for Android, by Big Fish Games.

Welcome to Deep Sea Solitaire, a challenging, but easy-to-learn and fun game. As the name implies, the game takes place underwater, in the ocean. But not only that, it’s also about exploring the seas, discovering new mysteries, and getting to the bottom of some of the deepest mysteries in the ocean.

Sylvie is a young ocean explorer, who’s just received a mysterious letter from her mother, inviting her on an ocean expedition. She’s not sure what to expect. Is it a treasure hunt? Is it a scientific experiment? Is it an adventure?

The first thing we need to say about Deep Sea Solitaire is that it’s really, really fun. The gameplay is extremely engaging, even if you’re not the best at solitaire games.