Metal Max 4 - Gekkou no Diva (メタルマックス4 月光のディーヴァ) is an open-world role-playing game for the Nintendo 3DS. Developed by Cattle Call and published by Kadokawa Games, it is the fourth installment in the Metal Max series and the first to be released on the 3DS. The game follows the story of a young man named Rion who is the sole survivor of a village destroyed by a mysterious force. With the help of a tank and a team of allies, Rion must travel across a post-apocalyptic world to uncover the truth behind the destruction of his village and put an end to the chaos. Players explore the world in their tank, fighting enemies and completing missions. The game features an open-world where players can freely explore and discover new areas. Players will also get to customize their tank by equipping it with various weapons and armor. The game also features an extensive sidequest system, allowing players to explore the world and complete missions for rewards. Metal Max 4 - Gekkou no Diva features an original soundtrack composed by Masahiro Aoki and a cast of voice actors. The game also features a variety of mini-games, such as fishing and gambling, which can be used to earn money. With its unique story, open-world exploration, and extensive customization, Metal Max 4 - Gekkou no Diva is a must-play for fans of the Metal Max series.