This is also available (and likely more up-to-date) in the add-on's included README.

While this game certainly is chaotic, it is intended to be non-destructive, meaning it won't ruin your blend files (if it changes something in the file, it should not result in a crash or permanently mess with your .blend file without triggering an autosave in between). I want to ensure artists feel comfortable running this game as they start their next project for a more chaotic yet harmless experience.

Rules

1. You can start and end the game anytime in the preferences.It does automatically end the game when opening a new file,so you have to turn it back on again.
2. Please do not recklessly spoil the game for others.Let others enjoy their first experience,especially if they want to "go in blind."This includes individual haunts as well as the secret win condition.
3. Be careful downloading this add-on from other sites.I share this add-on openly under the GPL license,which any end users must also respect in their own derivatives and modifications.But add-ons can be easily manipulated to harm or spy on your computer.If you're concerned or unsure, read the source code first or have a trusted programmer review it.

Contributing

See the README within the add-on for how you can contribute new haunts and translations back into the add-on.

Haunt List (you have been warned!)

Haunt list is also in the add-on preferences. I don't want to give too many details so you can enjoy it as-is. But here are things the haunts can temporarily affect (putting them in this paragraph instead of a list so your eyes are less likely to notice them at a glance): images, sounds, videos, splash screen, the user interface, the cursor, the user interface theme, mesh object data, object visibility settings, and text object data.