Shin Megami Tensei J

Shin Megami Tensei J (真・女神転生-J) is a 3D dungeon RPG based on the world of Shin Megami Tensei. It was designed for early Japanese feature phones. Due to this being developed by Atlus and not BBMF, it is likely that this is one of the first Megami Tensei mobile games.

It was released alongside various screensavers and 16 ringtones from Shin Megami Tensei, Devil Summoner, Soul Hackers, Persona, BUSIN Wizardry Alternative, and more for 30 yen each.

Gameplay
The game consists of 3D dungeon exploration, similar to the earlier installments in the series. During this, the player encounters randomized battles with enemies, using a cut-down battle ui. The player is able to travel to different locations using a text-based UI, and view information using a menu stylized as "DDS-NET."

The game begins with choosing Law, Neutral or Chaos. You then summon a demon and explore the dungeon as it. There are three types of dungeons, which are automatically generated so the dungeon is new each time you enter. You can search for over 200 items and armor and summon stronger demons to help you advance deeper into the dungeon.