In Tokyo 199X, a mysterious murder leads to the emergence of demons and an escalating global conflict thanks to the rise of a charismatic rebel leader in possession of a demon army, and external forces that wish to crush such threats with extreme measures. As the protagonist, players have an unusual ability (via computer program) to communicate with and recruit demons to fight for them. As they collect demons, the program will allow you to store, summon, and fuse them to create the right team to negotiate the ever-changing balance of powers, and fight for the kind of world you ultimately wish to live in.
This is the story of Shin Megami Tensei, which is now available on iTunes - and through March 31 will be on sale for $5.99 (reg. $7.99).