Mystery Science Theater 3000: The RiffTrax Experiments is a 2026 American limited series created and written by Michael J. Nelson, Kevin Murphy and Bill Corbett. A crossover of the 1989-99 cult sci-fi comedy series Mystery Science Theater 3000, which Nelson, Murphy and Corbett worked on variously throughout its time on the air, and their spiritual successor RiffTrax, made by them without the cooperation of their MST3K colleagues.