I adore solitare. But this game is one of my favorites. I keep challenging myself to get a better score every game I play. I got a win in 97 moves. Pretty proud of myself. The aquarium aspect of it is also super fun, and keep me engaged. I try to suggest this game to anyone who plays solitare! While there are tons of ads, I'm glad that I've never paid real money to further my progress, and that's the best part.