Despite taking place almost exclusively in the fictional landscape of a game world, what few special effects emerge are, in typical Cronenbergian fashion, physical rather than digital; the one major use of CGI is a two - headed lizard / frog hybrid, and its appearance is genuinely surprisingly more because we're so unaccustomed to seeing anything wholly computer - generated than because of how strange it actually looks — and that effect still holds up remarkably well. (slantmagazine.com)
There are very few special effects in the film, but through the use of convincing dialog and props with a lot of wires, the audience will buy into the idea that Robert has developed this hypnotizing device. (weliveentertainment.com)
Using all era derived dialogue, natural light, and few special effects, the film instead builds a thick atmosphere upon an era of toxic religious fervor. (filmthrills.com)