Shin Megami Tensei: 20XX Devil's Colosseum

Shin Megami Tensei: 20XX Devil Coliseum us a cell phone game created as a sequel to Shin Megami Tensei: 20XX. The game tells the history of The Hero before the events of the prequel.

Realeses

 * Japan: April 28th, 2008 (S! Apps)

Profile
The game also uses the Elemental-Based Combat System, but the races of demons were renamed by their combat type (e.g. Brute, instead of "Youki", they are named 戦人 Ikusanin, "Battler".)

Plot
Twin brothers (a boy and a girl) are left by their parents in an ophanage named "Silent night". They grow, and at 14 years old, the girl is possessed by a Demon and throws the ophanage into a dark maze, full of monsters. After receive a COMP by a mysterious man in a whellchair, the boy travels to rescue his sister, and save the ophanage.