I had wanted to see High-Rise for some weeks and I finally managed to get to a late showing on a Saturday night. My enthusiasm came from my love of the book by JG Ballard on which it is based.
High Rise was the third in his trilogy of contemporary dystopian novels Crash (1973), Concrete Island (1974) and High Rise (1975). I bought all of these as they came out and loved them all. Earlier novels had been set in dystopian futures, e.g. one with sever flooding (The Drowned World), but these were set in current times and twisted normal people and normal situations to create worlds that were both very recognisable and very strange. The opening line of High-Rise makes this tension obvious from the very start, "As he sat on his balcony eating the dog, Dr Robert Laing reflected on the unusual events that had taken place within this huge apartment building during the previous three months."
But this is about the film and not the book.