Sea Battle
The classic guess-the-grid naval game. Hide your fleet, hunt the enemy's, and sink every ship first.
Sea Battle is a free board game game you can play instantly in your web browser on a phone, tablet or computer, with no download and no sign-up. Hide your fleet and hunt the enemy ships. The classic naval guessing game vs the computer.
- Genre
- Board game, Strategy
- Controls
- Tap to place ships and fire
- Plays on
- Phone, tablet and computer
- Price
- Free, no account needed
How to play Sea Battle
You and the computer each hide a fleet of five ships on a 10 by 10 grid. Then you take turns firing at a square on the other player's grid. A hit is marked with a red cross and fire, and a miss with a white splash. When every square of a ship has been hit, it sinks. Sink all five enemy ships before the computer sinks yours to win.
Your fleet
| Ship | Squares |
|---|---|
| Carrier | 5 |
| Battleship | 4 |
| Cruiser | 3 |
| Submarine | 3 |
| Destroyer | 2 |
Placing your ships
Tap the grid to place each ship, starting with the Carrier. Use Rotate (or press R) to switch between horizontal and vertical, tap a placed ship to pick it up again, or tap Random for an instant layout. Ships may not overlap or touch side by side. When all five are placed, tap Start battle.
Firing
Tap any square on the enemy grid to fire. When you sink a ship, the squares around it are marked as water automatically, because ships never touch. You can always see your own fleet and the computer's shots on the small board below.
Computer levels
- Easy: mostly fires at random. Good for learning.
- Normal: searches in a checkerboard pattern and follows up every hit.
- Hard: works out where your remaining ships could be and fires at the most likely square. It usually sinks a fleet in about 40 shots.
Sea Battle strategy tips
- Search in a checkerboard pattern. Every ship covers at least two squares, so you only need to check every other square to find them all.
- After a hit, test the four neighbours. Once you have two hits in a row, keep going along that line.
- Hunt the big ships first. Once the Destroyer is the only ship left, you can skip any gap too small for it.
- Hide your ships unpredictably. Avoid lining them all up along the edges, and mix horizontal and vertical.
Questions
Is Sea Battle the same as Battleship?
It is the same classic pencil-and-paper game, often called Battleships, Sea Battle or Broadsides. Sea Battle is our own free version that you play against the computer.
Is it free?
Yes. Sea Battle is free in your browser on phone, tablet or computer, with nothing to download.
Are my results saved?
Yes. Your wins, losses and fewest shots to win are saved in your browser for each level.
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