The trivia item below may give away important plot points.
Near the end of the movie when Echo took off in the spaceship, Munch tried to lie to his parents about the whole adventure and told them "We played a new videogame. A guy with a soul of a dragon or something." He was referencing to "The Elder Scrolls: Skyrim." Which the main character had the soul of a dragon. He also says "It had really good voices". The actor who plays Munch actually did multiple voice overs for various children in the game.