D2 Megaten
A low-budget social (aka gacha) game based on Atlus' venerable Shin Megami Tensei series, made by staff from Yakuza Online under the "Sega Networks" banner.
Also known as Shin Megami Tensei: Liberation Dx2, but more commonly referred to as D2 Megaten by Japanese fans.
Source: 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.
The game represents an interesting chapter of the Sega-Atlus years, where there is reasonable ongoing experimentation with the new game modes and some of the better ideas have made their way back to recent Atlus games like Shin VV. Unfortunately the game has power scaled to the degree that it's impossible to play comfortably without access to the newer pay-to-win demons.