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Battle Sea
OfflineBattle Sea is part of the free Brain Games collection you can play online right in your browser, with no signup and no downloads. Battleship against the CPU: find and sink the entire enemy fleet. It runs instantly on desktop, mobile and tablet, and even on slow connections.
Battle Sea at a glance
- Category
- Brain Games
- Themes
- estrategia, classico
- Platform
- Browser (desktop, mobile and tablet)
- Price
- Free
- Players
- 1 player
- Offline play
- Yes
How to Play
Tap a cell in the left grid to fire. Red marks mean a hit.
About Battle Sea: rules and how it works
Battleship is the classic game of strategy and deduction in which each side hides a fleet on a grid and tries to sink the other's ships by calling shots blind, one coordinate at a time. Long before it became a board game, people played it with pencil and paper on hand-drawn grids. The fun lies in turning every hit into a clue about where the rest of the ship is hiding.
In this battleship game online you take on the computer across two 10 by 10 boards. Each fleet has five ships of 5, 4, 3, 3 and 2 squares, 17 squares in total, placed at random horizontally or vertically. You fire by tapping the enemy grid: hits show up red with an X, misses as a white dot. Score a hit and you fire again; miss and the turn passes to the computer, which plays by the same rule.
The first side to hit all 17 squares of the opposing fleet wins, and the counter at the top shows each side's hits. The computer fires at random until it finds a ship, then starts probing the neighboring squares, so stay sharp. It runs in your browser with no download or sign-up, works on phones and computers, and stays playable offline after your first visit. The ↻ button starts a new game with freshly placed fleets.
Battle Sea tips and strategy
- Fire in a checkerboard pattern, skipping every other square. Since the smallest ship is two squares long, every ship must cover at least one square of that pattern, so you sweep the sea with half the shots.
- After a hit, try the four adjacent squares: up, down, left and right. Once you land a second hit, keep going along that line until you miss, then work back the other way.
- Make the most of the bonus shot: every hit lets you fire again, so keep tracing the ship while you are on a streak instead of jumping to another area.
- The game does not announce when a ship sinks, so count your hits. Five in a row can only be the largest ship; with two or three, the ship may continue or two ships may be sitting side by side.
- Start near the middle of the board: long ships have more possible positions passing through the central squares than through the corners.
Frequently asked questions about Battle Sea
Playing the game
- Is Battle Sea free?
- Yes. Battle Sea is 100% free to play online — no signup, no charges, no play limits.
- Do I need to download anything to play Battle Sea?
- No. Battle Sea runs directly in your browser; just open the page, click Play and start. Nothing is installed on your device.
- Can I play Battle Sea on mobile?
- Yes. Battle Sea works on mobile and tablet browsers (Android and iOS), plus desktop and laptops.
- Can I play Battle Sea without internet?
- Yes. After your first visit, Battle Sea is stored in your browser as an offline game and keeps working with no internet.
About the game
- How do I play Battle Sea?
- Tap a cell in the left grid to fire. Red marks mean a hit.
- Can I play Battleship with two players?
- This version is single-player against the computer. There is no two-player mode on the same device and no online matchmaking. You fire at the enemy grid and the computer automatically answers on its turn.
- How many ships are in Battleship?
- Here each fleet has five ships: one of 5 squares, one of 4, two of 3 and one of 2, for 17 squares in total. Rules vary a little between paper and board versions, but this is one of the most common fleet setups.
- Can I choose where to place my ships?
- No. Both fleets are placed automatically at random, always horizontally or vertically, and ships may touch each other. If you want a different layout, tap the ↻ button to start a new game.
- What kind of game is Battle Sea?
- Battle Sea belongs to the Brain Games collection you can play free online, with a focus on estrategia, classico.