* KeepCirculatingTheTapes: For the longest time, copies of the Platform/SegaSaturn port went for as high as $200 USD on online shops. It was KeepCirculatingTheTapes/{{rescued}} in 2011 with a HD version released on Platform/Xbox360 through Platform/XboxLive for $14.99. The HD version has since been approved for backwards compatibility on Platform/XboxOne and Platform/XboxSeriesXAndS in 2017, and it was later ported to the Platform/NintendoSwitch by Live Wire in 2022 followed by a PC version that was released through Platform/{{Steam}} in 2023.
* LimitedSpecialCollectorsUltimateEdition: Through Limited Run Games, a Collector's Edition for the Switch version was produced, which includes a physical copy of the game with a reversible cover art, a steelbook case with a complementary slip cover, a retro-styled box inspired by long box Sega Saturn releases, a CD soundtrack containing the original music and chiptune arrangements, a "BE ATTITUDE FOR GAINS" keychain, a pin set of the Merry dogs, and an acrylic diorama of Stage 6 "The Origin", all packaged in a commemorative Collector's Edition box.
* NoExportForYou: Treasure didn't bother releasing this game overseas despite critical acclaim from foreign critics. This was first averted in 2011 with the internationally released Xbox 360 port, as a result, followed by later ports for the Switch and PC in 2022 and 2023, respectively.
* RemadeForTheExport: The post-Sega Saturn versions of the game features MediaNotes/HighDefinition visuals (such as true alpha blending implementation, something the Saturn couldn't handle), local/online CooperativeMultiplayer, online leaderboards with shareable replays, and an "[[ArrangeMode Ikaruga Mode]]", using the scoring mechanics of its {{spiritual successor}}, accessed by unlocking an achievement within ''VideoGame/{{Ikaruga}}''. This version would later serve as the basis of the Platform/NintendoSwitch re-release 11 years later and the Steam version the following year.
* SavedByTheFans: This is the reason why the Steam port exists. After the release of the Switch port, [=LiveWire=] announced they had no plans to release the game on other platforms at the time, much like their other ports. This resulted in fans who waited years for a PC port constantly begging the company to release the game on Steam, which eventually happened in 2023.
* WhatCouldHaveBeen: A Platform/PlayStation port was planned, but the console could not handle the complex mixture of 2D and 3D visuals.
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