A few months before the release of the original Wonderswan (March 4, 1999) french magazine PlayerOne issue 92 had a small article about the new platform in which it was shown an image about a mysterious vertical shooter. Overall Wonderswan (and future revision) only had an handful of shmups (Space Invader, SD Gundam Operation U.C., Project E-Force, Judgement Silversword, Cardinal Sins and Run=Dim) and none of them looks like the game shown before the launch.
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Additional images from Mega Console issue 54.
U64 is an archive with articles, screens and videos for cancelled, beta & unseen videogames. Every change & cut creates a different gaming experience: we would like to save some documents about this evolution for curiosity, historic and artistic preservation.