A free program for Android, by Board and Puzzle Games.

The SOS Game – Classic Strategy Board Games is a two-player board game. The players take turns putting either S or O at an empty square on the grid. When a player makes an SOS sequence (horizontal, vertical, or diagonal) that player plays another turn. The player who makes the most SOS sequences wins.

It’s very easy to learn and play. You don’t need any special skills. All you need is to use your brain to make the right choices! It’s a very fun and challenging game. You can play with your friends or play against the computer.

The game supports two difficulty levels. The easy difficulty level is very easy and the hard difficulty level is very challenging and anticipates future moves.