I'll be honest there were at least two movies about groups of people being trapped in a serires of rooms were no real laws applied. One was cube, one was something else.
When I posted I thought it was Cube that was the awful one, as a remake appeared it must have been the other one that was awful. Whoops.
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He who disagrees with me in private, call him a fool. He who disagrees with me in public, call him an ambulance.