Demon Summoning Program

The Demon Summoning Program is featured first in Shin Megami Tensei and plays an important role in the games it appears in as it allows for humans with the capability to utilize demons in battle as well as storing them away for later as data. It's usually utilized via portable computers called COMPs due to its convenience.

Appearances

 * Shin Megami Tensei
 * Digital Devil Story novels
 * Shin Megami Tensei: Devil Survivor
 * Shin Megami Tensei IMAGINE

Digital Devil Story novels
Akemi Nakajima created a system using his superior programming skills to summon the demo Loki from Makai, which is most probably a Demon Summoning Program.

Shin Megami Tensei
The protagonist carries a COMP which he uses to communicate with demons. It houses the Demon Summoning Program designed by STEVEN. STEVEN later upgrades the protagonist's computer so that it can store more demons.

Shin Megami Tensei: Devil Survivor
The Demon Summoning Program has been coded into altered COMPs, short for Communication Players, that look similar to the Nintendo DS consoles. Naoya gave the protagonist and his friends specially designed COMPs to survive the Tokyo Lockdown.

Shin Megami Tensei IMAGINE
Each player character in Shin Megami Tensei IMAGINE carries a COMP whick possesses the program. In the start of the game, the player can choose between two models of COMPs. Snakeman upgrades the player's COMP once they become a Devil Buster.