Castle of time

The inhabitants of the castle can be anyone, literally, any human being between 15 and 45 years old, born in any area and from any timeless place, as long as they have fallen into a wormhole. Most don't even speak the same language and nobody knows anything about the place; they are all equally lost. Some tend to be quite aggressive, either out of fear or because they are dangerous. You never know if someone is normal or crazy.

The Castle of Time is an infinite place with no apparent exits. It's vast and has sections decorated with different periods in time. Sometimes there are modern areas (with internet and television access), and other times it looks like a place from another era: a medieval castle, an ancient mansion, an oriental-style building, an ultra-futuristic style building, etc. The only way out is to find an open wormhole, but even then, it doesn't guarantee that it will take you back to the time and place you were in.