The Interloper is a puzzle exploration game centered around solving environmental puzzles using time travel, spatial thinking, and platforming. Play as an explorer sent to investigate the disappearance of an excavation team at the site of an ancient alien civilization, whose inhabitants also disappeared mysteriously 7,006 years ago. In the ruins you stumble upon the ability to time travel to the ancient civilization shortly after their disappearance by manipulating a statue and its relics. With this newfound ability, you start to piece together what happened to the inhabitants and find out more about the nature of their time-traveling power.​