B100X is an auto dungeon RPG developed by ohNussy, available for Android platform. This game aims to make hack-and-slash accessible to everyone with its full-auto battle and anything synthesis system. The game also features an automatic lap function, making it possible to enjoy it even during matching of competitive games.

In B100X, the player becomes a witness who assists the apostle Holly of God and challenges the seal of the Eternal Magic Cave, which is a terrifying monster's nest. The game is set in a world dominated by God and demons. What is God's true purpose? What is the relationship between the Holly Apostles and humans? These are some of the questions that the game tries to answer.

To play the game, create play data and choose a dungeon and a target floor to start your adventure. The battles are automatic, and the player can use experience points, junk, and drop items to strengthen Holly and aim for the deepest part of the Eternal Cave. B100X also has a PC/iOS version.