Four in a row is a game where you need to get four coins in a straight line in any direction to win and is taken in turns. You can play against another person locally. You can play against the computer as well and they have average difficulty. The computer does their turn quickly so you may prefer it to playing with someone else. When somebody wins wait 1 second and then click to end.
Credit to original four-in-a-row for idea. It might start lagging in full screen so play in small screen or download. Sometimes the computer may let you win, otherwise the only way is to create 2 ways to win without it realising and then they block one and you win with the other.