DAIVA Story 6: Imperial of Nirsartia

DAIVA Story 6: Imperial of Nirsartia is the sixth part of a seven part series developed by Toshiba EMI. The series is not a collection of sequential stories, but rather a presentation of the same story from seven different perspectives. Billed as an "Active Simulation War", each game has the player direct a different protagonist (or "hero") through a galactic war. In most versions, the player must travel from planet to planet, defeating enemy defense armadas, and then storming the planet in a mobile attack suit, destroying as much of the planet's defense systems as possible, all in an effort to take over the planet.

The different stories were released as follows:

When designing the Famicom version of the game, Toshiba EMI took the system's capabilities, as well as it younger market audience, in to account. The game has been considerably simplified compared to its computer counterparts. Before starting an action sequence, the player is allowed to place three power-ups along a map of the stage. When the player reaches these designated locations, the specified power-up will fall from the sky for the player to collect. The game concludes when the player locates and conquers two specific planets; the Vuritora manufacturing planet, and Nirsartia.