Battleboat Unblocked

Hide your five ships, hunt for the enemy fleet, and try to sink it before the computer finds yours.

Battleboat is a turn-based naval guessing game, and you can play Battleboat unblocked against a computer on two ten-by-ten grids. You secretly place a fleet of five ships, then take turns calling shots at hidden squares. Sink every enemy ship before the computer sinks yours and the win is yours. The fun comes from reading the clues each hit gives you, while knowing your opponent is doing the same thing.

Setting Up Your Fleet

The left grid, Your Fleet, is where you hide your ships. Click a ship name in the Place Your Ships list, press Rotate Ship if you want it to run up and down instead of across, and click a square to drop it in. A preview shows where it will sit before you commit. Ships may not overlap, and they must fit fully on the board.

Your five ships are:

  • Aircraft Carrier: 5 squares
  • Cruiser: 4 squares
  • Destroyer: 3 squares
  • Submarine: 3 squares
  • Patrol Boat: 2 squares

Once all five are placed, press Start Game. If you would rather skip setup, the Place Randomly and Start button scatters your fleet for you. The enemy fleet is already hidden on the other grid, and its layout changes every game. On your first visit, a short tutorial points at each step.

How to Play Battleboat

Click any square on the Enemy Fleet grid to fire. A miss leaves a white mark with an X, while a hit turns the square red. When every square of a ship has been struck, it sinks. As soon as your shot lands, the computer answers with one shot of its own at your grid, so the battle moves quickly.

Clicking a square you already shot at does nothing, and the computer does not get a free turn from it. Whoever loses all five ships first loses the game. A pop-up announces the result, and Restart Game sets up a fresh battle.

A Sample Opening

Not sure where to start? Try this on your first game:

  1. Fire near the middle of the enemy grid, on a square two or three spaces from the edge.
  2. Keep firing every other square in a diagonal checker pattern until you score a hit.
  3. After a hit, try the square above, below, left and right of it.
  4. Once you land a second hit in a line, keep shooting along that line in both directions until the ship sinks.
  5. Go back to your checker pattern and repeat.

With 17 enemy ship squares on a 100-square board, roughly one shot in six lands on something if you fire blind. Hunting in a pattern does much better than that.

How the Computer Thinks

This opponent does not pick squares at random. Before each shot, it works out how many ways your remaining ships could still be lying across every open square, and it aims at the best one. Early in the game it also leans toward an opening pattern that includes the four corners and several squares along the center diagonals. After it scores a hit, squares around that hit jump in value by a large amount, so it tends to chase a damaged ship until it goes down.

That means you cannot rely on luck to hide a hurt ship. Your best defense is a layout that gives the computer as little information as possible from each hit.

Ways to Beat It

  • Fire on a checker pattern. No ship is shorter than two squares, so shooting at every other square still covers the whole grid.
  • Follow up every hit. Test the four squares around a hit, then keep going in a line once you get a second one.
  • Leave gaps between your ships. Ships that touch can be found together in a single run of hits.
  • Mix horizontal and vertical. A fleet all facing one way is easier to predict after one or two ships are found.
  • Be careful with corners. The opening pattern favors corner squares, so a ship tucked there may be spotted early.
  • Widen your pattern late. Once only the Carrier or Cruiser is left, you can space shots three or four squares apart, since a short gap can’t hide a long ship.

Mistakes New Players Make

  • Stopping after one hit in a line. A ship can extend both ways from the first hit, so check the other side too.
  • Bunching ships in one area. Once the computer finds that zone, it can sink several ships in a row.
  • Ignoring the stats. The accuracy number shows whether your hunting pattern is working. If it stays low, tighten your search.

Playing on a Phone or Chromebook

You can tap to place ships and fire, but both grids sit side by side and shrink to fit, so squares get small on a phone. A laptop, a Chromebook, or a tablet turned sideways makes aiming much easier. The game has no sound, so it is quiet enough for a library.

Your record lives in the browser on that device. The Stats panel shows wins as “X of Y” games and your hit accuracy, and both survive closing the tab.

Who It Suits

A full game takes about five to ten minutes, which fits a short break. It is a calm, thinking game with no timer, so you can take your time on every shot.

If you enjoy quiet strategy against a computer, more board and card games are waiting:

  • Chess AI has no hidden information at all. Every piece is visible, and the challenge is planning ahead.
  • Four in a Row is a faster duel where you drop discs and try to line up four.
  • Mine Field is a solo puzzle that also asks you to guess hidden squares from number clues.

Quick facts

Devices
Best on computer, playable on tablet
Controls
Mouse, Touch
Players
1 player
Price
Free, no sign-up
  • board game
  • naval
  • guessing
  • strategy
  • computer opponent

How to control Battleboat

ActionMouseTouch
Pick a ship to placeClick its name in the Place Your Ships listTap its name in the list
Turn the ship before placing itClick "Rotate Ship"Tap "Rotate Ship"
Place the shipClick a square on Your Fleet (a preview shows on hover)Tap a square on Your Fleet
Fire a shotClick a square on Enemy FleetTap a square on Enemy Fleet
Play again after a game endsClick "Restart Game"Tap "Restart Game"

Made by

Bill Mei · originally “Battleboat.js”

Code license
MIT
Art & sound
MIT (author's own small marker icons; grids drawn with CSS, no audio)

Battleboat questions

How smart is the computer in Battleboat?

Fairly smart. For each open square it counts how many ways your surviving ships could still cover it, then shoots the square with the highest count. After a hit, the nearby squares become the likely targets, so damaged ships rarely survive long.

What ships are in each fleet?

Both sides get the same five: an Aircraft Carrier of 5 squares, a Cruiser of 4, a Destroyer and a Submarine of 3 each, and a Patrol Boat of 2. That makes 17 ship squares per side.

How do you win Battleboat?

Sink all five enemy ships before the computer sinks all five of yours. A ship goes down once every one of its squares has been hit.

Does Battleboat save my progress?

It does not save a battle in progress, but a stats panel keeps your wins, games played and shot accuracy in your browser. Reset Stats clears them.

Can I play Battleboat on a Chromebook?

Yes. It runs in the browser and only needs clicks, so a trackpad or mouse on a Chromebook works fine. The side-by-side grids are easiest to read on a laptop-sized screen.

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