Here's a look at the game's features:
In FINAL FANTASY: Record Keeper, the entire FINAL FANTASY universe is at player's fingertips! Featuring an all-star cast of characters including Tidus, Lightning, and Cloud, players recruit their favorite heroes from across the entire FINAL FANTASY franchise to form the most dynamic team of all time. With a massive roster of characters, the possibilities are endless! Characters can each be completely customized and equipped to the fullest with iconic gear, powerful spells, summons, and hundreds of weapons to choose from.Gameplay in FINAL FANTASY: Record Keeper is as strategic and challenging as ever with the classic FINAL FANTASY Active Time Battle (ATB) system in place. Players battle their way through the most epic FINAL FANTASY moments, woven together for the first time on mobile with an all-new tale. Featuring skill-based interactive gameplay, players plan attacks, carefully choose tactics, and engage enemies in active time battles.
People who pre-register at the game's official website will be able to unlock special characters when the game is released, including Tidus from Final Fantasy X.
Source: Final Fantasy: Record Keeper