Enter Roland Emmerich's Stargate. The 1994 action-adventure movie with a sci-fi twist drops Egyptologist Daniel Jackson (James Spader) and Special Forces Colonel Jack O'Neil (Kurt Russell) into an otherworldly Egypt after unlocking a portal that allows access across the universe. The basic setup makes the story feel like a lost-civilization adventure before it becomes a traditional alien-invasion story. There are ancient gods, mysterious hieroglyphics, buried secrets, enormous temples, and an entire civilization living under the thumb of a supposed god.