The game has an unusual setting (a science fantasy take on the Sengoku period) and gameplay as a curtain fire game.

This kind of shooter is called a barrage shooter or a curtain fire shooter.

Curtain fire adds drama to panto

This type is also known as "curtain fire", "manic shooters" or "maniac shooters".

Cradling his automatic weapon in one arm, Fergus sprang to his feet and sprinted across the open deck, laying down a curtain fire.

I would speak of the deadly curtain fire of the British; he would counter with mysterious allusions to Krupp.

Team Shanghai Alice: specializes in curtain fire scrolling shooters, most notable for the Touhou Project.

As the Russians neared the enemy lines, their artillery used curtain fire to trap the Austrian forces in their deep trenches, which now became prisons from which the could not escape.