Rule 1: The game is played on two grids, one for each player.
Rule 2: Before play begins, each player secretly arranges their ships on their primary grid.
Rule 3: Players take turns calling out row and column coordinates on the other player's grid in an attempt to identify a square that contains a ship.
Rule 4: If the square called contains a ship, it is a "hit". If the square called is empty, it is a "miss".
Rule 5: The game ends when all of one player's ships have been sunk.

No, Battleships Armada on Poki is currently a single-player game where you play against the computer.

Yes, you can choose to play against the computer in easy, normal, or hard mode.

If you miss, it becomes your opponent's turn. It's important to keep track of your misses so you don't call the same square twice.