Prisonnier II is a two player turn-based strategic puzzle game. Each player begins on opposite sides of a grid of spaces. Each turn a player can make one move and place a wall in one of the free spaces. The game continues until one player is unable to move, which loses the game.

The game was initially released in 2018. A second release with an updated version was announced in February 2021.

The game is available as a physical release and downloadable for free from the official website.