The Transformers franchise's iconic teaser trailer still stands out as a masterful marketing relic from a bygone era of atmospheric, standalone teasers.
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The teaser sets up the franchise's penchant for revising history, depicting a Decepticon attack on the Beagle 2 Mars rover, hinting at the ominous scope to come.
While modern blockbusters have moved away from such standalone teasers, this trailer's gradual build-up and sense of dread is a refreshing contrast to the franchise's later, frenetic editing.