Update and Modding

Hello Exorcists!

Here's a new update that was difficult to produce.

- The main new feature is the ability to mod the game, many of you have asked for it.

- New interior layout of the camper van and adaptation of the Hub for it.

- New ambient sound during entity attacks.

- Ragdoll bug fixes and various fixes.

- Unity 6 version upgrade to fix Unity security vulnerabilities.