Battleship is a turn-based strategy game based on the classic board game of the same name. The Game Boy version simplifies the board size compared to the larger console and PC versions, yet retains the core strategic elements. Players must use sonar and careful positioning of their ships to sink their opponent's fleet.  This version was likely published by various companies across USA and Europe.

Battleship (USA, Europe)

Battle Unit Zeoth (USA, Europe)