Not much, I'm afraid. We seem to be brought here at random, and there is no way to return. However, it seems time doesn't pass back home while we are here, and those brought here from the same worlds may be from different points in each other's past or future.

Death is impermenant here, although still obviously ill-advised, and occasionally the castle plays some form of tricks on us which are impossible to avoid.

Food, drink, medications and amusements are all freely available by wishing, although in exchange for this hospitality the castle has taken something from you on arrival - a loss that you may not even realise is missing.