who designed this game?
Koichi Ishii.
Trials of Mana
The game was designed by series creator Koichi Ishii, directed by veteran Square designer Hiromichi Tanaka, and produced by Tetsuhisa Tsuruzono.
what is 'trials of mana'? An action role-playing game.
wiki:20334287
Trials of Mana [SEP] Introduction
"Trials of Mana" builds on the gameplay of its predecessor with multiple enhancements, including the use of a time progression system with transitions from day to night and weekday to weekday in game time, and a wide range of character classes to choose from, which provides each character with an exclusive set of skills and status progression. The game was designed by series creator Koichi Ishii, directed by veteran Square designer Hiromichi Tanaka, and produced by Tetsuhisa Tsuruzono. Artwork was produced by manga and anime artist Nobuteru Yūki, while the music was composed by "Secret of Mana" composer Hiroki Kikuta.