I'm a huge nonogram and Derek Yu fan, so this feels like I willed it into existence!
It's an exceptional game too, better polish than Jupiter's Picross series in most cases.
Excellent art and sound track (including the juicy sound effects).
Having things to unlock and progress as you play is so refreshing compared to just having a bunch of puzzles to work through too.
A couple of gripes. The numbers only greying out when all of them have been completed rather than individually, has lead me to having to restart/fix more than a few puzzles.
Also, controller support only seems to work on the puzzles and not the hub (this could be a me issue though)
Well worth playing for a Picross/nonogram fan, even if you've never touched UFO 50.
Keep up the great work!