Admiral's Notebook: play free online

computer, with two players on one device or online with a friend.

One battle takes five to ten minutes. You deploy your fleet, tap a square in the enemy waters and watch the shell fly, a column of spray on a miss, fire and smoke on a hit and a ship going down when it sinks. While your opponent is aiming you can mark up to three next targets, and they fire by themselves when your turn comes back.

Battleships rules

Each player has a ten by ten grid with columns A to J and rows 1 to 10. The fleet has ten ships: one battleship of four squares, two cruisers of three squares, three destroyers of two squares and four patrol boats of one square, twenty squares in total. Ships are straight, horizontal or vertical, and may never touch, not even at the corners. You fire at one square: a hit lets you fire again, a miss passes the turn, and a sunk ship reveals the water around it. The first player to sink the whole enemy fleet wins. While you deploy, the game paints the water around every ship so you can see where the next one may go, and one tap places a random legal fleet.

Play battleships online or with two players

Play battleships online with a friend through a link or a quick match. Two people can share one phone or computer, with a hand-over screen that hides each fleet. The computer has three levels, Cadet, Captain and Admiral, and never looks at your ships.

Tactical battle and the Arsenal

In the tactical variant every captain has two sonar pings that count the untouched ship squares in a three by three area, one airstrike on three squares in a row and one torpedo on three squares in a column. Coins earned in battles buy a flare, radar and bombs in the Arsenal. Coins are earned only by playing and nothing in the game is for sale, and in online matches both sides carry the same set.

Campaign, daily operation and leaderboard

Twelve missions in four chapters have their own goals and medals for fewer shots. A daily operation gives everyone the same fleet each day, and the leaderboard rewards wins with few shots. Victories raise your captain's rank and your harbour: lighthouse, shipyard, academy and admiralty. The game works in ten languages, has a day and a night theme and full keyboard controls on a computer.