⊂二二二( ^ω^)二⊃ ブーーーーーン!!!! (Boooooon!!!!) is a free‌ware horizontal shoot-em-up in which all characters are composed of Shift JIS art. It's not entirely a Touhou game, but a Shift JIS depiction of Marisa Kirisame is included as the first mid-boss of stage 3.


The game includes three stages, and initially two difficulty levels to choose from. The gameplay mechanics are somewhat reminiscent of Progear, in that destroying enemies turns any enemy bullets caught within the explosions into point items, and all point items and power-ups can be vacuumed in by switching between focused and unfocused modes. A chain system is also used for scoring.

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