* HumansAreTheRealMonsters: This is one possible interpretation of when Peter finds a woman in the dungeons of medieval world near the end of the film. He initially believes her to be a fellow guest left chained up when the robots ran amok either as part of a capture-and-escape fantasy like the jailbreak in Western World, or else maybe as some kind of kinky bondage game. Then he finds out she's a robot when a drink of water shorts her out. If one thinks the implication is that she was probably chained up as part of some sicko human's torture and rape fantasy left uncompleted when the robots revolted, then it is this trope. But if one believes she was actually placed there as part of the authenticity of the world, it is not.
* OlderThanTheyThink: OsamuTezuka actually came up with a very similar premise over a decade earlier for an episode of ''Anime/AstroBoy'' entitled ''Robotland''. Not only that, the aesthetic of the park is suspiciously similar to the "Murder Game Room" from the late 1960s Sankei Newspaper ''Manga/AstroBoy'' serial, right down to the cowboy costumes. Tezuka himself points out the similarities in his introduction to the trade paperback in which the Robotland story appears, where he dismisses it as mere coincidence rather than a deliberate ripoff.
* ParanoiaFuel: You'll think twice before taking a vacation in a great park like this one from here on in.
* UncannyValley: The disassembled robots.
** The gunslinger specifically. Even when all together he still looks like he doesn't blend in with the rest of the bots. Especially with those doll like eyes.
* WhatDoYouMeanItsNotSymbolic: The Black Knight on the throne.