Pre-release images of the game show Eligos wearing a different but similar outfit from what was is seen in the final game.
The magic circle Serenity steps onto at the start of levels contain the phrase "vita non est vivere sed valere vita est" which is the Latin proverb for "life is more than merely staying alive."
The runes that appear in the magic circle every time Serenity uses the Demons' Score read "Tu Fui, Ego Eris." It is Latin for "I was you; you will be me." The runes under her read "Mors Tua, Vita Mea" which is also Latin for "Your loss is my gain."
iNiS was inspired to create the game after seeing the impressive high-end graphics displayed by Infinity Blade on mobile platforms.
In the western versions of the game, most of the key content was locked behind in-app purchases. However, in the Japanese version, all key content is bundled with the upfront purchase, with smaller monetizations.