A free program for Android, by AI Factory Limited.

You are the king of your own destiny! Four In A Line (also known as Connect 4 and Four in a Row) is the classic travel game. In this free version of the game you have to find those elusive 4 pieces in a row, either vertically, horizontally, or diagonally, before your opponent does.

The rules are simple: you have to connect 4 pieces of your own color, either in a row, a column, or a diagonal, to create a line. You have to do this before your opponent. You may not connect 4 pieces of the same color within the same row, column, or diagonal.