Speculative fiction is a broad umbrella category of narrative fiction referring to any fiction story that includes elements, settings and characters whose features are created out of imagination and speculation rather than based on attested reality and everyday life. That encompasses the genres of science fiction, fantasy, science fantasy, horror, alternative history, and magic realism.
It is the year 2146. Answering a distress call from the dilapidated
Hotel Galaxian, the Tardis crew discover a games enthusiast is using the
hotel to host a murder-mystery weekend. But then it seems that someone
is taking the games too seriously.