This is a simple scrolling shooter game in the style of 80s-90s arcades. Operations are supported by mouse, keyboard, and XINPUT gamepad. When you destroy a certain number of enemies, items will appear, and when you get them, you will gain allies called units. You can freely arrange units in formation, so find your own original strategy. A formidable boss awaits at the end of the stage. How far you can go depends on your strategy and technique.