I promised I'll do this, and finally here it is. I've been noticing some PC-98 patterns looked REALLY familiar after playing Windows games, so I planned to give PC-98 games a more detailed look. A lot of patterns are too simple or generic to make parallels reliably, but here are some of the more notable and interesting cases.
Meira's pattern and
Kagerou's "Triangle Fang"/"Star Fang"Both move around the screen leaving a trail behind (a line in Meira's case, medium-size white bullets in Kagerou's) which bursts into bullets that result in a pretty chaotic pattern (Meira's can also burst into aimed bullets). Kagerou's spellcard pictured above is an Easy version - she leaves THREE lines on higher ones. (Also, inb4 "Kagerou is Meira bitten by a werewolf" theories.)
Mima's pattern and
Yatsuhashi's "Heian's Reverberation"/"Echo Chamber"Both are tight streams of reflecting bullets. While Yatsuhashi rotates them all around her and Mima shoots them all in one general direction and initially straight, the similarity of approach becomes apparent when the latter starts waving them.
SoEW extra stage pattern and
Orin's third nonspellA quite witty pattern. Four lines of tiles that form a cross burst into circles of bullets, from center and outwards. It's the same in Orin's case, just with spirits and more lines. In both cases a highly symmetrical and very structured pattern is formed.
Evil Eye Sigma's pattern and
Mokou's "Flaw of Forgiving Shrine"The approach to patterns is strikingly similar. Both are reflecting vertically flying bullets. Differences are that for Evil Eye Sigma bullets reflect twice and it shoots lasers right below it, while for Mokou there are two sets of bullets at the same time, they reflect only once and are slower after reflecting.
Kurumi's pattern and
Nazrin's "Rare Metal Detector"/"Gold Detector"Lasers are shot towards the sides of the screen and burst into circles of bullets. Quite a unique thing, I don't think I've seen this in any other STG.
Yuuka's pattern and
Marisa's "Master Spark"Get an eyeful on how different the two are
Going into details, Yuuka's is bigger, always in the center and vertical, while Marisa's is usually aimed (and sometimes turns). For accompanying bullets, Yuuka's are a fast circle of "lines" and a random bunch of slower circles. Marisa usually has circles of stars (in case shown above, there are faster and slower circles at the same time).
Yuuka's pattern and
Eirin's "Earth in a Pot"/"Galaxy in a Pot"In both cases, your first reflex would be to stay out of what is actually a safe area (purple circle and circle of familiars respectively). Notable differences are that the former shrinks while latter stays the same and then expands, and additional danger in form of bullets come from Yuuka in former and from familiars in latter.
Shinki's pattern and
Byakuren's "Devil's Recitation"Pretty obvious and very faithful recreation. Except much improved - shown above is Lunatic version of the former and Easy version of the latter, and it already trumps its predecessor.
Well, that's it for the most notable cases I've noticed. If I missed anything big enough, feel free to add anything, just keep to the format to prove your findings.
