Source: Riko Hato
A social (aka gacha) game based on Atlus' venerable Shin Megami Tensei series, made by a division of RGG Studio by staff from Yakuza Online under the "Sega Networks" banner.
The core gameplay loop is based on a variant of the press turn combat system from Nocturne, the fully enclosed Wizardry-inspired dungeon design of the original Digital Devil Saga: Megami Tensei, and the PVP and character progression from Summoners War.
Character designs were from Tatsuro Iwamoto, a Capcom alumnus of Ace Attorney and Monster Strike fame.
Scenario writing duties fell to a number of industry figureheads. Among them were Makoto Fukami of Psycho-Pass, Asaura of Lycoris Recoil, Minato Kushimachi of the PS3 Wizardry Renaissance games, and Kazuyuki Yamai of Atlus.
Also known as Shin Megami Tensei: Liberation Dx2, but more commonly referred to as D2 Megaten by Japanese fans.
Incoming links: d2 fiction