The game mechanisms are generally carried over from the original Shikigami No Shiro, with the addition of more playable characters.

Five difficulty levels are available, for both the regular game and the "extreme mode", in which enemies release additional fire when destroyed.

As with many shooters, the game places emphasis on obtaining high scores, which is facilitated by the Tension Bonus System (TBS).

[13] The American release, Castle Shikigami 2, was known for its Engrish dialogue, produced as a result of overly literal translation combined with stilted and generally unemotional voice acting.

An English version with an updated translation was developed by Alfa System and Cosmo Machia and released by Degica Games for Windows via Steam on December 6, 2021 as Castle of Shikigami 2.

[8] A number of tie-in novels and manga volumes were produced, expanding the story of the game: Magazine ZKC serialization compilations: Other products released, typical of Japanese video game franchises, include an art book, a standalone soundtrack CD, a set of illustrated telephone cards, plastic models of two of the characters, and the "Appreciate DVD", a disc of gameplay footage similar in concept to the Ikaruga Appreciate DVD.

==Legacy release of Shikigami No Shiro: Nanayozuki Gensoukyoku, a spin-off adventure game in the visual novel style with shooting elements,[15] as well as the arcade release of the proper sequel, Castle of Shikigami III, which expands the roster to nine or ten playable characters while removing two old characters.