The history of Isekai anime is a long and tortuous path, filled to the brim with its up and downs, and with many forgotten series that are desperately needing a remake. But what would it be of this genre without studios specialized in the creation of their fantasy worlds? This list has some of the best studios specialized in Isekai anime, taking into consideration their technique, overall quality of production, worldbuilding fidelity, and the public reception of their adaptations.