Spike Jonze's Her featured Samantha - the artificially intelligent operating system of the future, but that's not all the movie showed off. The futuristic video game in the film is now making its way into real life.

The animator and designer of the fictional game, David OReilly, announced the release of his first indie game — Mountain — at the Horizon Indie Game Conference at E3 on Thursday. Here's a video reminder of how it was like in the film. Seems totally immersive: