Ah, only just seeing his now ^_^ A very nice idea indeed!

Makes me think of the script I wrote for my drama/theatre exam years back. Was based around a group of strangers stuck inside a single room, hiding from whatever was hunting them outside (creature was never specified for suspense/mystery) as the plot itself focused on their mental states deteriorating over time. Only had to use one location which was ideal with minimal prop usage. Went quite well.

Not sure if I'll have time to write something similar, but will keep my eye out. 😃