radio zonde

For a type of balloon, use radiosonde.

A 2002 freeware top-down shoot'em up by RANYON_(Hiranyon) for Windows PC.
Circle Ruminant's Whimper's doujin shoot 'em up Hellsinker. and this game share the same universe.

Characters

• MAHILO (Mahiro)
• YOXOLA (Yozora)
• DENLI (Denri)
• AOXOLA (Aozora)

See also

• Fanmade wiki: http://www40.atwiki.jp/hellsinker/
• Vector software library: http://www.vector.co.jp/soft/win95/game/se313786.html
• [Wikipedia] / [Nicopedia] / [pixiv encyclopedia]