This is a touhou fan-game relleased at C78 by BlueMica, featuring remilia as main character and the game takes place on the scarlet devil mansion, you can see the other familiar characters from remilia's crew there too, such as sakuya or patchouli, as NPC's. It's a side-scrolling 2D platformer, with some RPG elements and a lot of dialogue. So much that it may be troublesome for people that doesn't understand japanese. The graphics are well presented and the animation is pretty fluid. The game has some elements similar to castlevania, because it's in a gothic atmosphere, and the whole setting of the game, like the mansion's locations such as the maids' room, kitchen or the magic library, could be compared to castlevania's geography, such as the alchemy laboratory, the marble gallery or the outer wall. The game's soundtrack is standard, probably some of them are based on arranges of the touhou original games. And the characters artwork is chibi and very cute/well done. I can't really comment much about the game, since I barely started and I'm having troubles to advance on it, because of the dialogue. So, I and some other people would most likely be interested on an english translation patch.
Official site:
http://www.blue-mica.com/Video:
http://www.youtube.com/watch?v=CNcnm8mGTL4