(EN) Anoop Gantayat, No Kingdom Hearts 3 By 2012, su ign.com, IGN, 28 settembre 2010. URL consultato il 15 gennaio 2011 (archiviato il 15 ottobre 2013).
Nomura: "[...] Also, we were moderate with the battle difficulty levels due to taking the tendencies of modern players into consideration, but many people have let us know that they want to fight harder enemies. So, I plan to release a Critical Mode soon as a free download, and add Final Mix type tough enemies to the purchasable DLC pack." - Kingdom Hearts 3 Ultimania - Main Nomura Interview Translated - News - Kingdom Hearts InsiderArchiviato il 12 maggio 2019 in Internet Archive.
(EN) Alexa Ray Corriea, Kingdom Hearts 3 coming to PS4, su polygon.com, Polygon, 10 giugno 2013. URL consultato il 10 giugno 2013 (archiviato il 15 giugno 2013).
Nomura: "[...] Also, we were moderate with the battle difficulty levels due to taking the tendencies of modern players into consideration, but many people have let us know that they want to fight harder enemies. So, I plan to release a Critical Mode soon as a free download, and add Final Mix type tough enemies to the purchasable DLC pack." - Kingdom Hearts 3 Ultimania - Main Nomura Interview Translated - News - Kingdom Hearts InsiderArchiviato il 12 maggio 2019 in Internet Archive.
(EN) Anoop Gantayat, No Kingdom Hearts 3 By 2012, su ign.com, IGN, 28 settembre 2010. URL consultato il 15 gennaio 2011 (archiviato il 15 ottobre 2013).
(EN) Alexa Ray Corriea, Kingdom Hearts 3 coming to PS4, su polygon.com, Polygon, 10 giugno 2013. URL consultato il 10 giugno 2013 (archiviato il 15 giugno 2013).