Main character Spellbook Demonslayers protects the Cosmic Library, fighting monsters and demons that come from the other world. In the gameplay you will have to kill hundreds of opponents with the help of magical abilities and super talents. The player can create super fighters and take on the abilities of fallen opponents to become stronger. The task is to defend the Library until the horde of demons is destroyed.

The gameplay combines elements of survival and simplified roguelike. Before starting the race, the user needs to select a character, customize his appearance and the combination of the first spells. Each playthrough allows you to unlock new abilities and pieces of equipment. The rewards you receive help you fight your opponents more effectively and defeat thousands of monsters. Each enemy has a skill that can be assigned to you if you defeat it.

The gamer has the opportunity to create his own style of play by choosing a combination of skills. Elite Enemies will strengthen their allies, but by killing them, you can take over their strength and become more powerful. Each race the user is able to create unique super-strong characters, changing spells and improvements, becoming stronger. Controller management is supported. There are dozens of magical talents, characters and items used in battle.