Metal Max (メタルマックス, Metaru Makkusu) is a 1991 vehicle combat role-playing video game developed by Crea-Tech and published by Data East for the Nintendo Famicom exclusively in Japan on May 24, 1991 and later re-released on the Wii Virtual Console on April 27, 2010. It is the first of the Metal Max series. Metal Max is set in a futuristic post-apocalyptic world, where the surviving humans cluster in underground villages and ruins while "monster hunters" fight the monsters and outlaws outside. The game got a sequel, Metal Max 2, and was remade for the Super Famicom as Metal Max Returns.

Metal Max was an early example of an open-ended and non-linear role-playing video game. It lacked a predetermined story path, but the player was instead given the choice of which missions to follow in whatever order while being able to visit any place in the game world. The ending can be determined by the player, who can alter the ending through their actions, complete the game at almost any time, and can continue playing the game even after the ending.

The gameplay is classic RPG fare: the characters travel from town to town, having random encounters on the way, upgrading items and tanks as they go. The object is to become a well-known and respected hunter by defeating the monsters with bounties on their heads, which can be done in any order the player pleases. There is a surprisingly rich storyline, but as it is not forced on the player it must be actively sought out. A large part of the game is customizing tanks: tank parts can be bought or found, and the parts, as well as the tank itself, can all be modified. The player uses a BS-Controller (BS-Con), a personal computer system, to track data about things such as towns, tanks, bounties and experience points. Combat is turn-based. There are a large number of miscellaneous items, weapons and upgrades, most with unique or uncommon capabilities.

The character classes, such as a mechanic or soldier, could be chosen for the player characters, who would fight in turn-based battles either on foot or using tanks. The player could create tanks, customize and make a variety of modifications to them, remodel and enhance each part, strengthen the defense, repair damaged parts, and give them more shells.

Tank

A unique characteristic of Metal Max is the Vehicle system. In this game, each character can ride a vehicle and there are 8 different vehicles that can be collected. A vehicle protects the driver from physical damage and can be equipped with weapons.

Each vehicle has their own exclusive chassis. A Vehicle's loading capacity is decided by the maximum power of the equipped Engine. All parts besides plate armour have a certain weight so if the vehicle becomes overloaded or the engine is damaged, it will be unable to move. Every vehicle can be equipped with a C-Unit (Computer-Unit), a fire control system that affects the hit rate of equipped weapons. (In Metal Max Returns, it has more functions.) The above two are necessary for vehicles so if one of these becomes broken or unequipped, the Vehicle will be unable to move by itself.

A Vehicle can have between 0-3 slots on its chassis that can accept a certain class of weapon. The weapon's are divided into three classes: Cannons, Machine guns, and Special weapons. Cannons are powerful, but have limited ammunition. Machine guns have unlimited ammunition and can hit multiple enemies but are weak. Special weapons are both powerful and can hit multiple enemies, but can be heavy and tend to run out of ammunition very quickly.