If you're the sort of person who has neither friends nor squared paper, this could be the game for you. The ancient pencil-and-paper parlour game has been stylishly computerised with a fairly intelligent electronic opponent and fancy graphics of battleships, aircraft carriers, submarines and torpedo boats glugging their way to a watery grave.
It's a nice game of Battleships but no more enjoyable than the low-tech original, so you might as well save yourself a couple of quid and buy a pad of graph paper and an HB pencil.