For a little while I've been working on this video game using the RPGmaker software, loosely inspired by the medieval Hekhalot and Merkavah traditions of mystical literature, which describe the process of 'descending' into heaven alive to witness God and the heavenly beings surrounding him. 
In it, you will explore multiple 'lower realms', meeting the beings that reside there and uncovering the secrets of the seven principle spirits ruling over each realm. All the assets are hand-drawn or sculpted from plasticine.