Master Takahashi's Adventure Island IV is the fourth and final Adventure Island game released for the Famicom. It bears the distinction of being the final official Family Computer game in Japan and was never officially released for the international market. Unlike previous entries in the Adventure Island series, Bōken Jima IV plays less like a linear platformer and more of an action/adventure platformer, similar to the later Wonder Boy games. Adventure Island IV also has a unique password system that the earlier games in the series didn't have. It also features an egg item that allows the player character to teleport to the special spot where the player puts it. There is a large variety of weapons to choose from which are unlocked by the player throughout the game. Many special items can be won in races and challenges, such as an angel/fairy item that allows the player character to re-spawn once, at the spot where they lost all hearts and even an compass that acts like a map showing the player with an arrow where to go. Whereas in the earlier Adventure Island games the player character had a food meter and when it runs out, the player lost a life, in Adventure Island IV, the player simply collects 8 food items to regain 1 heart as health.