It also has elements of Groundhog Day, insofar as the hosts repeat the narratives they create for the guests on loop.
Westworld premiered on HBO in the US 2 October, it begins in the UK 4 October.
It also has a very strong Red Dead Redemption vibe.
There are plenty more reference points for the show, Quantum Leap, The Matrix, The Terminator, The Hunger Games… it doesn’t feel derivative of any of these though but rather fresh and new.