日本 Cave 宣布，预定于 2019 年春天在手机平台上推出一款新作游戏《Devil Book》（デビルブック）登场与玩家们见面。 本作为韩国NgelGames与Starter两家公司共同合作开发，主打类似铅笔描绘独特美术插图设计的传统手绘动画风动作 MMORPG 游戏。在游戏中，玩家们可以从众多登场人物里挑选出三名自己喜欢的角色来进行组队（角色会有互克的属性设计），借此来挑战各式各样的关卡副本。 附带一提，本作除了日本之外，也将预定于之后在全世界手游平台陆续推出，让全球手机游戏玩家们都可以体验这款独特手绘动画风线上动作角色扮演游戏的独特魅力。
Japan Cave announced that due to the spring of 2019 to launch a new game on mobile platform "the Devil's Book" (デ ビ ル ブ ッ ク) come to see players. This NgelGames as South Korea and the Starter two companies work together development, the main similar pencil painting unique art illustrations design traditional hand-drawn animation wind action MMORPG game. In the game, players can be selected from the many dramatic personae three of your favorite role for team (characters will have each other's property design), take this copy to challenge a variety of levels. Accompanied by the way, this in addition to Japan, will be scheduled for a mobile game platform in the world after the launch, make the global mobile phone game, players can experience the unique hand-drawn animation wind online action role-playing game unique charm.