Hearts Solitaire Spades FreeCell Cribbage Yahtzee Gin Rummy Canasta More games...




Change player...

Click a piece to start.

You are using a very old browser, that is no longer supported by this site. We recommend that you upgrade to one of the following browsers:

Download Mozilla Firefox Download Google Chrome


Play with sounds?

The game sounds are pretty loud, but they make the game a lot more fun. You can always change your decision later by clicking on Options and turning "Play Sounds" off or on there.

Bill's ships

Your ships

Click a piece to start


v0.1 (12345678)

Sea Battle

All games

Certain changes only take effect after refreshing the page.

Sea Battle Multiplayer Lobby

Click a table to join a multiplayer game.

Private table created

The code for the table is:

Give that code to whoever you want to play with, they can use it to join. Or send the link below to them, if they click it they'll join automatically:

Join private table

Please enter the code for the table:

Want to create a table for just you and your friends? You can Create a private table or if someone has sent you a code you can join a private table.

What do you want to say to your opponent?

Well played!
Oh no :(
Good game!
๐Ÿ€ I was lucky!
Stay safe!
No table talk!
May the force be with you!
Bill taught you well!
Prepare to lose!
I've made a huge mistake! :(
My mistake!
Your turn!
I have to go.
Technical difficulties

Can't use multiplayer

Sorry, it looks like you have cookies disabled for our site. The Multiplayer mode doesn't work without cookies enabled ๐Ÿ™.

Connection problem

Your connection to the game server is having some problem, but we are trying to reconnect you to the game. ๐Ÿค“ Giving up in .

Game disconnected

Sorry, we couldn't connect you back to your game. ๐Ÿ™


Sorry, you were disconnected from the game for too long, we had to remove you from the game so the others could keep playing. ๐Ÿ™


It looks like you might be a . You can now wear a Beskar armor while playing.

Do you want to put on the helmet?

Game table not found

Sorry, we couldn't find your game table on our servers! ๐Ÿ™

Block, mute, favorite

If you mute a player you won't see any messages they send during a game. If you block a player they can no longer challenge you to a game or join a table you are at. IF you favorite a player, they'll have a little heart to remind you how awesome they are!

Join table with blocked user?

This table has a player () that you have blocked previously (perhaps under another name). Are you sure you want to join it?

Challenge sent

You have challenged to a game. Waiting for their response...

You've been challenged

has challenged you to a game!

Challenge declined

Challenge accepted

accepted your challenge! One moment, we're setting up your game...

Challenge accepted

You accepted 's challenge! One moment, we're setting up your game...

Challenge cancelled

Sorry, cancelled their invitation.

You have disconnected

You are now disconnected, other players won't see you online and can't challenge you. You can always go back online by clicking on the Multiplayer button.

App out of date

Hi. It looks like you're using an older version of our app. Please update to the latest version to continue playing our multiplayer games ๐Ÿ˜Ž.

Sea Battle Multiplayer


Challenge... yourself?

You can't challenge yourself. But you can change your name if you want!

Enter your name

Please enter a name to display to other players

Are you sure you want to concede the game?


You've been disconnected due to inactivity. You can always reconnect by pressing the "Multiplayer" button


Would you like to play another game with the same players?

Turn off the timer?

has suggested that you turn off the timer for the game.

Congratulations, you won!

Hide scorecard and show ships

Hi. This game is currently not ready for playing, it's in beta testing right now, we'll announce when it's ready.

If you've been given a beta-testing code by CardGames.io please enter it below and click the Enter button.

We have an app now!


We've created a new CardGames.io app for your tabletphone! All the games from the website, in fullscreen mode, with more characters! Would you like to get the app?

Welcome to the Matrix.


Happy Star Wars Day! May the 4th be with you!

Don't like Star Wars? Click here to turn the theme off. Or come on over to our Facebook community group and tell us all about it.

Happy Halloween! Don't like the Halloween theme? Click here to turn the theme off. Or come on over to our Facebook community group and tell us all about it.
Happy Easter! Don't like the Easter theme? Click here to turn the theme off. Or come on over to our Facebook community group and tell us all about it.
Happy Thanksgiving! Don't like the Thanksgiving theme? Click here to turn the theme off. Or come on over to our Facebook community group and tell us all about it.
Don't like the Christmas theme? Click here to turn the theme off. Or come on over to our Facebook community group and tell us all about it.
Don't like the New Years theme? Click here to turn the theme off. Just want to get rid of the fireworks? Press here to stop them. You can also come on over to our Facebook community group and tell us all about it.

Sea Battle Rules

Sea Battle (which you may also know under the name Battleship) is originally a simple pen and paper game. You play against an opponent, you both have a piece of paper with two 10x10 grids, one grid for your own ships, and one for your opponent's ships which you are trying to find. You start by arranging your ships on your grid. The ships you have are:

Ship Type Count Ship Size
Aircraft Carrier 1
Battleship 2
Submarine 3
Patrol Boat 4

The ships may not be next to each other on the grid, not even diagonally, there must always be at least one square between ships. Other than that you can arrange them how you want. You can either take the default random placement, click on the "Randomize" button to get a different random placement, or you can drag the ships around and click on them to turn them to get a completely custom setup.

I know many versions of the game allows ships to be next to each other, but that is not allowed here. I think it makes the game a lot more interesting if it's not allowed, since then getting a large ship gives you a greater advantage.

Players then take turns announcing a shot on the grid, e.g. a player will say "E5" and their opponent will then say "hit" if they hit something on E5 or "miss" if they missed. If you hit a ship you get to shoot again. You mark which squares are hits and which are misses and try to be the first to sink all your opponent's ships. The first player to sink their opponent's ships wins the game.

There are many variatons of the game with different ships and different names (Battleship, Broadsides), but we've chosen the version I used to play myself in Iceland. And the name "Sea Battle" is a direct translation of what the game is called in Icelandic ("Sjรณorrusta").

Back to game

About Sea Battle

Author image

I've wanted to make this game for a while and finally got around to it. It's our fifth game in the terrible year 2020. The other games we've made this year are Lockup, Addiction Solitaire, Clock Solitaire and Thirteen.

Sea Battle is a simple game but can be a lot of fun, especially against a real opponent. I also had fun playing around with some CSS animations and transitions to make it feel a bit more interesting, as well as some really loud sounds ๐Ÿ˜€. Any comments, questions or feedback can be sent to support@cardgames.io .

Need to contact us?

Any comments, complaints, bug reports, questions, or anything else should be sent to support@cardgames.io. We can't respond to everyone, but we try to respond to as many as we can. If you just have a quick question make sure it isn't covered in our FAQ. You can also often get help from other users on our Facebook community group , where many of our users congregate. Pop in and say hello!

You can also find us on any of the following sites:

Back to game

This is version 1.15.3 of Sea Battle.

This website uses cookies to store game data, your preferences, and for analytical and advertising purposes. Read more in our Privacy Policy. Cookie Settings.

Game failed to load

The primary script that runs our games seems to not have loaded, somehow.

This is in despite of the fact other scripts seem to have loaded up just fine.

This issue has been automatically reported and we're looking into it, but we'd be very grateful if you could send a report to support@cardgames.io with any further detail you can think of, including if you're running any script-blocking extensions, ad-blockers, or if your browser is set to block specific types of scripts.