Hoo boy , controversy time . Of course , HPMOR and Worm will always be contentious . Neither quite meets top literary standards aside from the rational elements , so the people who enjoy Rationality above style will love them , and the people who enjoy style above Rationality will hate them . Par for the course , sadly . I think it needs to be pointed out ASAP that within the rational fiction community , there is a distinction between rational fiction and rationalist fiction . Worm is the former . HPMOR is the latter . Rational means that the author is applying rationality . Rationalist means that the characters are as well . That said , Worm has a massive fanfiction community , and it most certainly has a lot of rationalist fiction within it , as opposed to merely rational . Security ! , by Ack , is a good place to start . It ' s certainly not without its flaws , but if you liked Worm , and you liked HPMOR , you ' ll probably like Security ! . Manager is another good example . I will also recommend Friendship is Optional , a rational My Little Pony fanfic that requires less knowledge of source than HPMOR by an order of magnitude . Ra and Fine Structure by Sam Hughes are also very good rational fiction . If you enjoyed HPMOR , Significant Digits is a time skipped continuation that it quite excellent rationalist fiction . I ' m sadly on my phone right now , so I can ' t give links , but I will add more recommendations and some links tomorrow .