In Japan, Atlus once released a game called Megami Tensei Gaiden: Last Bible for the Game Boy Color in 1999. This game was brought to North America as Revelations: The Demon Slayer, and is Japan’s next GBC title for the Nintendo 3DS Virtual Console.
Unlike most Megami Tensei games, Revelations takes place in a medieval setting. Similar to other games in the brand, however, you can talk to and fuse monsters. The game will be released on April 25th on the Nintendo eShop in Japan.