Final Fantasy Dimensions II, known as Final Fantasy Legends II: Toki no Suishō in Japan, is an Android and iOS game developed by Square Enix, and is the second game released with the "Final Fantasy Legends" title after Final Fantasy Dimensions, which was originally released in Japan under the title Final Fantasy Legends: Hikari to Yami no Senshi.

The game was initially launched on February 15, 2015 under the name Final Fantasy Legends: Toki no Suishō (ファイナルファンタジー レジェンズ 時空ノ水晶, Fainaru Fantajī Rejenzu Toki no Suishō?, lit. Final Fantasy Legends Crystal of Space-Time) as a free-to-play title. It was announced on November 2, 2016 that the game would be undergoing a massive update and would be rebranded as Final Fantasy Legends II (ファイナルファンタジー レジェンズ II, Fainaru Fantajī Rejenzu Tsū?). The updated version replaced the original on November 10, 2016 in Japan.

The game ended its free-to-play service on October 31, 2017, citing difficulty with maintaining and delivering a product that would be to everyone's satisfaction. The company also stated that the free-to-play frontend would be removed from all stores by the end of November. Meanwhile, Square Enix released a standalone version of the game worldwide on the same day, retitling it Final Fantasy Dimensions II (Final Fantasy Legends II: Toki no Suishō in Japan) with a purchase price of US$14.99.

The game follows a young man named Morrow, who desires to become a famous adventurer. His life is forever changed when a meteorite falls near his home of Navos Village and meets a mysterious girl named Aemo. What lies ahead is an adventure that takes Morrow and his companions through time and space in order to save the world from beings attacking the fabric of history.