How to play
On your turn, write either S or O in any empty square. Every new S-O-S sequence you complete scores a point and lets you play again.
Two players · about 5 minutes
SOS
Choose S or O. Make SOS in any direction. Each SOS scores a point.
RulesBoard
Blue goes first.
Why it’s good
The rules fit in two sentences, but choosing between S and O makes it feel very different from noughts and crosses.
Look in every direction
An S can finish a line from either end, while an O only works in the middle. Before placing a letter, scan horizontal, vertical and diagonal lines.
A little more
Two ways to play
General SOS rewards every SOS you make and gives you another turn, so one move can create several lines. Simple SOS ends as soon as the first SOS appears, which makes each square feel much more dangerous.