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Banshiryuu (幡紫竜, lit. "Pennant Purple Dragon") is a vertical-scrolling danmaku shoot 'em up that focuses on fewer, faster bullets, and is the third official game in the Seihou Project by "Shunsatsu sare do?" . The game came in two major versions, released on Comiket 67 (Winter 2004) and Comiket 74 (Summer 2008) respectively. Both versions were released specifically for the Windows operating system.
The gameplay style is very similar to the style of the main Touhou games, as they both are danmaku shoot 'em ups and they both play vertically.
Name and Concept
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2003年12月的C65颁布体验版、2004年12月的C67颁布除Ex面外全部完成的近似完成版。后来本来预定是追加Ex面，但最终变成了全面调整。 以后、陆续发布和C67版同捆的修正版。2006年8月のC70发布直到2面的修正版、2006年12月のC71到4面、2007年8月のC72到6面（最终面）的修正版、2007年12月のC73修正版追加关卡选择机能、2008年8月的C74发布完成版(2.100版)。(>_<) 2009年1月又更新了3.000版。
The name 幡紫竜 is named after the Japanese-translated name of a cactus: "mammillaria poselgeri".
This time round, ZUN hasn't created the themes for this game and it was by halt and Doku Den P instead. A total of 28 themes is included in the C74 version of the game, with an extra 4 from the C67 version. The C67 version only had 22. It's the first Seihou Project game to have the music stored in an .ogg format. In the fandom community, there is very little arranged music of the themes.