Last Armageddon

Both the demon soldiers and their enemies may cast magic spells or physical attacks. Some magic attacks have the ability to inflict poison damage on any of the player's creatures. If a creature is poisoned, the player must spare some of their creature's magic points in order to cure the affected monster through the "Kuizzu" (キーウッズ) spell. Letting the creature remain poisoned for a certain amount of time will eventually lead to its death.

The game plays like a role-playing video game and graves of fallen demons by the home base remind the player of the situation of the game. When a player first starts the game, they should not go to the right, as experienced monsters lie there in a stadium-shaped power station that is in the southeastern corner of the map. It will take a foursome of level 5-10 characters in order to defeat the robots inside the dome. As characters advance in level, the monster images change slightly. By the time the characters advance to levels 17 through 34 (the maximum possible levels), the monsters will look completely slimy and the fusion of the cells will get ugly.

The humans, who breathed the toxin-filled air on Earth's surface, became one with the Earth and kept dissolving. The history of humanity ended and dominion of the planet returned to the demons. These mutant creatures did not depend on oxygen to survive. Therefore, they were able to breathe the air and use the land.

Meanwhile, an army of robots wage World War IV against the demons in order to conquer what is now known as Makai - the Demon World. These robots came to the planet on a wave of energy that created an explosion that turned the world into a wasteland. Much later in the game, concurrent themes including Adolf Hitler, war, creating a perfect race of people, and the destruction of humanity in the year 1999 are revealed to the player inside one of the robot's main bases.