Connect 4 by Papergames.io

Grid slots fill from the bottom up. In matches of Connect 4 by Papergames.io, a 7x6 board holds falling discs as two players race to line up four in one uninterrupted chain. Since 1974, this pencil-and-paper classic has also moved online, pairing friends or opponents from around the world in multiplayer rounds. The central column creates more linking options for later placement. That same space also cuts off rival setups when claimed early. Trap play shapes many rounds, especially positions that leave two separate winning lines one disc short.

How to play?

Drop discs into any column, with each piece settling on the lowest empty space or stacking on top of another. Build four horizontally, vertically, or on a diagonal to take the round. Form a double line with two threats missing one disc each. The reply blocks only one side. Lay three discs along the bottom row against an inattentive opponent, then use the left or right extension for the finishing move. Close off columns that feed an enemy row or vertical setup. A forced reply can hand over the next winning placement. Use any row that supports the chain you want to complete. Higher rating gains follow successful wins.