The Shin Megami Tensei Devil Children Card Game was produced by Media Factory and released in Japan beginning in February 2001, tied to the Devil Children sub-series of the larger Shin Megami Tensei franchise developed by Atlus. It is a two-player game in which each participant builds a 40-card deck and races to accumulate 20 points by summoning demons and negotiating with the opponent.
The game ran across two blocks totaling seven sets. The first block launched with the Goumaden set (163 cards) alongside the Red Legend and Black Legend starter decks, each containing 40 cards plus a die, damage counters, and a scoreboard. A second wave within the same block added White Legend: Angel Side and White Legend: Devil Side decks in November 2001. During the second block the game was rebranded as D-Children to match the concurrent DeviChil anime adaptation. The final set was published in 2002, and the line concluded in early 2003. Collector copies still surface on import markets.
Source: megatenwiki.com/wiki/Shin_Megami_Tensei_Devil_Children_Card_Game