King Trix is a free Android game developed by King of Hearts. It is a card game played by four people using a standard international 52-card pack without jokers. The cards in each suit rank from high to low: A-K-Q-J-2. The game is divided into four "Kingdoms," and each Kingdom consists of five games, which the player who "owns the Kingdom" decides the sequence of games to play.

King Trix features both online and offline gameplay, making it accessible to players anytime, anywhere. The game also offers easy authentication using Google and Facebook, allowing players to jump right into the game without any hassle. Additionally, the game has a points system that does not require players to be connected all the time.

King Trix offers all types of Trix games, including Complex and Kingdoms, as well as single and partner modes. The game is easy, simple, and fast, making it perfect for both beginners and experienced players. Lastly, the game features a Top Players list, allowing players to compete with others and see who has the highest score.

Overall, King Trix is a great card game for four players that offers a variety of gameplay modes and features, making it an enjoyable experience for all.