Connect 4 is a free multiplayer game. You can play Connect 4 against a friend, or meet new connect 4 players online.We have thousands of regular users and you will find a partner anytime of the day.Connect4 is also known as Connect 4, Connect Four, 4 in a row, Four in a row, 4 in a line, Four in a line.This game Connect 4 online is 100% free.