Battleship Online

Classic naval strategy in your browser — place your fleet and hunt the enemy. Play solo vs AI or challenge a friend in real-time multiplayer.

▶ Play at battleship.hackatoa.com

Features

• vs AI — three difficulty levels (Easy, Medium, Hard)
  • Easy: random shots
  • Medium: hunt/target mode — pursues hits
  • Hard: probability-density map (finds high-value targets)
• Real-time multiplayer — share a room link
• Standard 10×10 board, 5 ships (Carrier, Battleship, Cruiser, Submarine, Destroyer)
• No account or download required

How to play

1. Place your ships on the board
2. Take turns calling shots — first to sink the enemy fleet wins!

Tech stack

• Node.js + Express + Socket.io
• Vanilla HTML/CSS/JS
• Docker + GitHub Actions CI/CD (auto-deploys via Watchtower)

Self-hosting

docker run -p 3025:3025 ghcr.io/hackatoan/battleship:latest

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Part of Hackatoa Games · Buy me a coffee