It looks like you're new here. If you want to get involved, click one of these buttons!
This game is classic version of the battleship game. You guess the position of the ship on the map. And this will show the position of the ship on map. You can play the entire game for free and there are no in app purchase options. It contains lot of ads though. So you may need to block them.
You can download the game here: https://play.google.com/store/apps/details?id=de.smuttlewerk.fleetbattle