* ActorAllusion: If you happen to play as [[Creator/EriKitamura Type-B]] in ''[=SaiDaiOuJou=]'' and was able to get to [[Creator/AoiYuki Hibachi]]'s TrueFinalBoss form, then you may have been able to spoil the entire second half of ''Anime/PuellaMagiMadokaMagica'' [[ItMakesSenseInContext inversely]] and [[FridgeHorror straight]]. [[http://www.youtube.com/watch?v=P_QBisDe2OQ&t=3m20s Go figure]].
* CutSong -- [[http://www.youtube.com/watch?v=MY9LTWjcvq0 "Zatsuza"]] from the ''[=DaiFukkatsu=] BLACK Label'' soundtrack was initially thought to be this, but it was revealed that the song plays during the fight against Zatsuza, the [[UpToEleven stronger]] replacement of Hibachi.
* DevelopmentHell -- There is a patch for the XBox 360 version of ''[=DaiOuJou=]'' that fixes the numerous bugs in the game (see PortingDisaster). It took about ''two years'' since the game was released to make; by the time it was out the sequel ''[=DaiFukkatsu=]'' was already ported.
* FanNickname: In ''[=SaiDaiOuJou=]'' [[spoiler: Hibachi is called "[[MoeAnthropomorphism Lolibachi]]" or "[[Anime/PuellaMagiMadokaMagica Mado]][[Creator/AoiYuuki bachi]]"]]
** Ketsupachi for ''[=DaiFukkatsu=]] BLACK Label'' Arrange Mode on the XBox 360. (See CrossOver).
* GenrePopularizer -- While certainly not the first BulletHell game (''Batsugun'', another such game, was released 2 years before ''[=DonPachi=]''), ''[=DoDonPachi=]'' certainly did popularize the concept.
* KeepCirculatingTheTapes; ''[=DoDonPachi=] Campaign Version'', a single board of which was distributed, and to a contest winner. As such, this version is not available in MAME, and if the board becomes damaged beyond repair, this piece of history (and arrange mode of ''[=DoDonPachi=]'') is gone. '''Forever.'''
* NoExportForYou:
** The first game has a proper US release, and the second has an "International" release. And that's only for arcades; none of the console releases have made their way outside of Japan.
** Rising Star is set to finally end this trend with a European release of ''[=DaiFukkatsu=]'' (under the English title used for the iPhone game) in November 2011. However, North America shows no sign of getting it.
*** Rising Star has announced that the European release will be compatible with US-NTSC consoles. So North America ''does'' get it... if they're willing to import. However, an EU UsefulNotes/XboxLiveArcade account is needed for the V1.5 and Black Label DLC's. And the Black Label Arrange mode (aka "Ketsuipachi") is not available outside of Japan.
*** The iOS ports are downloadable in America, however.
*** Degica games will bring over the game (with the english title) to steam in fall 2016 complete with both black label and Ketsui modes.
** The retail version of ''[=DaiFukkatsu=] Black Label''. Although the DLC version of ''Black Label'' is available in the PAL version, which has no region lockout, it does not have the the ''VideoGame/{{Ketsui}}'' {{crossover}} arrange mode that the retail version has.
*** {{Irony}}: The ''Ketsui'' arrange mode's soundtrack was arranged by Creator/JakeKaufman, an ''American'' composer.
** ''[=SaiDaiOuJou=]'', though at the least it is region-free.