Use the left mouse to drop tokens and build a row of four.
Choose the Public or Private room and set your nickname to play free online the cool Connect 4 IO game with the best strategy! Connect to the opponent and get ready to check your ability without difficulty. Your mission is to quickly build up a row of four tokens to become the winner. It is not simple to conquer the challenge because you will be always blocked by the rival. Furthermore, they can set traps and you will be able to fail if you are cheated. Thus, you should try to do the same before they turn you into the loser. Put up pillars for your alignments or prevent the other. After you enter Connect 4 IO, you will experience in turn. Click or touch on the position that you want and you can drop an item into. You can arrange them in every direction, vertically, horizontally, or diagonally until you reach the goal and fulfill your task. Good luck!