Yeah they did a lot of weird things. Like Keira Knightly's character Joan Clarke gets her job in the film when Turing does his weird crossword puzzle test. In real life she got it because one of her professors from school recommended her for the job. In the movie Turing works closely with Cairncross and realizes he is a Soviet spy. In real life while they worked at Bletchley park there is no evidence they ever met. It also really downplays the role Polish intelligence and cryptanalysts had in breaking Enigma from before the war even started.
Kind of like how U-571 downplays the non-Americans involved in the Enigma.
It also generally portrays almost everyone around him at Bletchley as some level of ignorant, stupid or maliciously obstructive, despite the fact that most of them were brilliant mathematicians and engineers whose contribution equalled his. But the real story of an incredible collaborative effort is sacrificed for a facile Hollywood narrative of a single, misunderstood genius single-handedly saving the day. It’s honestly one of the worst films ever made.
I don't know where to even begin with the imitation game. It is shocking that they put a real person's name to such fiction. Everyone involved should be a bit ashamed of themselves.