system. Travelling between alternate timelines is a key part of both the storyline and the gameplay, with the number of potential timelines unlocked influencing the ending.

Radiant Historia was developed by a team with staff drawn from both Atlus' Megami Tensei series and the tri-Ace title Radiata Stories. First proposed by Satoshi Takayashiki in 2007, the base concept underwent several changes due to suggestions from Atlus