"4 in a Row", also known as "Four in a Line", is a free puzzle game developed by HarokoSoft for Android devices. The game offers a realistic and enjoyable gaming experience that will keep you entertained for hours.

Players can choose to play against the Artificial Intelligence module (AI) or with another person. Unlike other games, the AI in "4 in a Row" is not predictable, making each game unique and challenging. The game is played on a 7-column x 6-row panel where each player takes turns dropping their colored chips into the panel.

The objective of the game is to connect pieces of the same color horizontally, vertically, or diagonally before your opponent does. The game is fast-paced and exciting, and players start playing in rotating shifts. The game is currently available in four languages: Spanish, Catalan, English, and Portuguese. The developers have also promised upcoming improvements, including an online game mode.

Overall, "4 in a Row" is a great puzzle game that is easy to learn, but difficult to master. With its realistic gameplay and challenging AI, this game is sure to provide hours of fun and entertainment.