Think you know how to play four in a line? This feature packed game will squeeze your brain for hours thanks to 400+ unique puzzles that will teach you the strategy no matter your initial skill level, different rulesets and board sizes, online multiplayer, tough artificial intelligence and cool themes.

Play solo or with a friend, in a phone or a tablet, in the board you like most from plastic to wood and colored pencils. MyBackup Pro integration support to save and restore game state.

Already a Pro in the game? Welcome aboard! Switch to the hard AI level and get ready for real brain action in a solitaire fashion. Or try the skill-based matchmaking for intense games online.

This is the gravitational four in a row where discs fall from the top and you have to connect 4 chips in a line. Should you be looking for a three in a line (aka Tic Tac Toe), five in a line (aka Gomoku) or non-gravitational connect four, try Lines & Puzzles instead: https://play.google.com/store/apps/details?id=com.mocelet.lines

PLEASE RATE and comment if you like this game and/or email me if there is anything wrong to fix it. Thanks!

* Interface tweaks and error fixing
* Thanks for rating and reporting errors!