One of the developers of Magical Prisma here!
Thank you so much for the review, it is the first one that we have seen and it has made us really happy. Magical Prisma is an open beta, because there are a lot of changes and new features coming up really really soon to the game (multiple stages, animated characters, huge improvements in gameplay, online mode...) that we hope, will make it even better and more enjoyable for the future release.
Best regards - Lead developer of Magical Prisma.