- I Knew It!: Zenia Valov is Lieselotte Achenbach's older sister.
- Marth Debuted in "Smash Bros.": For those who didn't play the second game, every character is available in 3.
- No Export for You:
- The second game. Most likely this was because the PlayStation 2 version didn't handle the game well.
- The Xbox 360 version of the third game is not available in North America due to circumstances beyond Arc System Works' control. The Xbox 360 version, weighing in at 2 gigabytes, breaks the 800 megabyte limit for Xbox Live Arcade titles. However, this was back in around 2011, where the limit was still in place. Since then, no limits to game sizes were then made for XBLA titles. However, it has since had a Games on Demand (digital, and physical) release in Japan and Europe, albeit the game itself is region locked.
- The original game and the sequel skipped Europe.
- Outlived Its Creator: Toru Sakurai, the creator of the franchise, died in May 2017.
- Relationship Voice Actor: You can find several The Idolmaster voice actresses here, in particular Hiromi Hirata (Makoto Kikuchi) as Kamui, Mayako Nigo (Yayoi Takatsuki) as Lilica, and Juri Takita (Kotori Otonashi) as Mei-Fang and Mei Ling.
- Screwed by the Network:
- Atlus removed the voices used during dialogue and the Voice Collection menu in the North American PS2 version of the first game due to Sony Computer Entertainment America's policy against games without English dubs. The same region's PlayStation 3 port of the third game was forced to go download-only for the same reason. It was then further screwed when Sony shut down their download service for over a month shortly after its release.
- As aforementioned, the Xbox 360 port of the third game was screwed due to the game's size exceeding the limits of a typical game featured on Xbox Live Arcade. It has since had a Games on Demand (digital and physical) release in other regions instead, albeit region locked.
- What Could Have Been: Among the stretch goals for the Kickstarter of SIX STARS!!!!!! were the possible inclusion of three new characters, Pistrix, Dark Heart and Omega. Of these, only the goal for Pistrix was reached, which left the fate of the two other characters up in the air. This was later subverted when Dark Heart was reached in a new fundraiser, albeit without her Arcana.
- The Wiki Rule: Arcana Heart Wiki.
Trivia / Arcana Heart