Kingdom Hearts -Infinite Fickle Timeline- (also known as Kingdom Hearts IF Timeline) is an alternate timeline and subseries to the Kingdom Hearts series which is meant to be a different storyline, while it features old gameplay mechanics (with some changes), the storyline is radically different, mainly the fact that Kairi is the main protagonist, with Sora as the main antagonist.
- Kingdom Hearts: Struggle of the Instability (Nintendo DS, 2006)
- Kingdom Hearts II: Irresolution of the Heart (Nintendo DS, 2009)
- Kingdom Hearts III: ~link connection~ (Nintendo DS - Nintendo Wii, 2012)
- Kingdom Hearts IV (tentative title) (Nintendo 3DS, 2014)