Board game · Lychee Games
Play Sea Battle online with a friend
Sea Battle is a hidden-fleet game: arrange your ships, then search your opponent’s grid without seeing where their fleet sits. I kept placement and shooting separate so each game begins with a small planning problem. Hits give you information, but a miss also rules out a square for your next decision.
- Players: 1 or 2
- Modes: Solo, Same phone, Online room
- Price: free, no sign-up
Play Sea Battle nowOpens in your browser. Nothing to install.
How to play Sea Battle
Goal: Sink all five enemy ships before your opponent sinks yours.
- Place five ships (5, 4, 3, 3 and 2 squares) on your 10 × 10 grid. Tap an empty square to drop the chosen ship, tap a ship to rotate it, drag a ship to move it, or let Random place them.
- Confirm your fleet, then take turns firing at a square on your opponent’s grid.
- A ✕ is a hit, a • is a miss, and a ✖ means a ship has gone down.
- Online, each fleet is locked in with a fingerprint before play and shown at the end, so nobody can fib about a hit.
Scoring and winning
- The first player to sink all five enemy ships wins.
Controls
- Keyboard
- ← ↑ → ↓ aim
- Enter confirms the fleet or fires
- R rotate, X random fleet, C clear, F fire
- Touch
- Tap to place or rotate, drag to move a ship
- Tap a square on the enemy grid to aim, then tap Fire!
Modes
- Rules
- Classic: one shot a turn. Shoot again: an extra shot after every hit. Salvo: one shot for each of your ships still afloat, all at once.
- Solo
- Play the computer.
- Same phone
- Pass the phone between turns; a cover screen hides each fleet.
- Online
- Two players. Create a room and send the code or invite link, or join with a friend’s code. One code from the hub’s Play together panel works for every game.
Tips
- Search in a checkerboard pattern. Every ship covers at least two squares, so you can skip every other square at first.
- Once you hit a ship, test the squares around it to find its direction rather than scattering shots across the board.
- Do not cluster your own fleet; ships touching each other are easier to find once one is hit.
Sea Battle is free in your browser, with no sign-ups and no ads. Online rooms need an internet connection; one room code from the Lychee Games hub works for every game, so you can switch games without sending a new invite.
Questions
Is Sea Battle free to play?
Yes. Sea Battle is free in your browser, with no sign-up, no download and no ads.
What are the Sea Battle rule sets?
Classic gives one shot a turn. Shoot again gives an extra shot after every hit. Salvo gives one shot for each of your ships still afloat, fired all at once.
How many people can play Sea Battle?
Sea Battle is a head-to-head game for two: a friend online, the computer in solo mode, or two people on one phone.
Can I play Sea Battle on my own or on one phone?
Yes. Solo mode: Play the computer. Same-phone mode: Pass the phone between turns; a cover screen hides each fleet.