was one of the earliest games to be produced as a computer game, with a version being released for the Z80 Compucolor in 1979. Many computer editions of the game have been produced since. In Clubhouse Games for the Nintendo DS, Battleship is known as Grid Attack. It is played on a 7×7 grid, and includes slight variations, such as four-player gameplay, and various ship sizes and shapes. Versions of Battleship appear as applications on numerous social networking services. Battleship was also part of Hasbro Family Game Night for the PlayStation 2 and Wii, as well as the Xbox 360 (Xbox Live Arcade). These alter the rules, including the size of the grid (8×12 in the NES version, 8×8 in the Game Boy version), size of ships (it is common to feature a submarine that takes up a single square) and special shot missiles for each ship. For example, in the NES version, the cruiser has a five-shot missile which strikes five squares in an X pattern on the grid in one turn. Submarine-tracking sonar and aerial reconnaissance to spot ships are also features. A minigame version of Battleship was used in the third season of The Hub's Family Game Night, which uses a 5×5 grid and the first team to sink three ships wins the game. In 2012, the military science fiction action movie Battleship was released, which was inspired by the Milton Bradley board game. A version of Battleship based on the movie was released in which one side had alien ship playing pieces. In 1973 a spin-off version was released under the name Sub Search. Employing a three-dimensional play area, battleships drop depth charges on submarines hidden on a multi-level board. In one episode of the Amazon Prime Video show The Grand Tour, presenters Richard Hammond and James May played a game of Battleship with two cranes (colored red and green) and 20 REVAi vehicles as missiles. The ships ranged from cars to campervans. Description The game is played on four grids, two for each player. The grids are typically square – usually 10×10 – and the individual squares in the grid are identified by letter and number. On one grid the player arranges ships and records the shots by the opponent. On the other grid, the player records their own shots. Before play begins, each player secretly arranges their ships on their primary grid. Each ship