Spades - Expert AI is a free iPhone game developed by NeuralPlay LLC. It offers a variety of popular variants of the classic card game, including Partnership Spades, Mirror Spades, Suicide Spades, Whiz Spades, Solo Spades (Cutthroat), and more.

The game comes with a range of features to enhance the playing experience. Players can undo moves, replay hands, and skip hands. The game can be played offline, making it convenient for on-the-go gaming. Detailed statistics are available to track progress and improve gameplay. Additionally, there are bid and play hints to assist players in making decisions.

Spades - Expert AI offers six levels of computer AI, catering to players of all skill levels. The unique thinking AI provides a strong opponent for different rule variations. A special feature called "The Rest Are Mine" allows players to claim the remaining tricks when their hand is high.

Players also have the option to customize the rules of the game, including playing with jokers and/or deuces as high trump, passing cards to partners on nil and blind nil bids, and choosing the nil/blind nil bonus and penalties.

Overall, Spades - Expert AI provides a comprehensive and customizable Spades gaming experience on the iPhone.