Shin Megami Tensei: Devil Summoner: Soul Hackers

Shin Megami Tensei: Devil Summoner: Soul Hackers, known in Japan as simply Devil Summoner: Soul Hackers, is an RPG developed and published by Atlus. It has seen three releases in Japan, on the Sega Saturn, the PlayStation, and finally on the Nintendo 3DS. The 3DS release is the only one localized into English for players outside Japan.

Story
Amami City. A supposed technological utopia; a city entirely connected to one computer network. A city dreamed up and created by the computer software developer Algon Soft. You, a member of the hacker group "Spookies", live in Amami City. One day, "Spooky", the founder of the group, shows up with an odd PC (shaped like a gun) he purchased from a local pawn shop. Little does he know, the PC carries a very dangerous secret...