Most critics respond warmly to Infinity Castle, with praise concentrated on Ufotable’s animation and the inventive combat within its shifting, labyrinthine fortress. The fights impress through their movement and staging, while the antagonists’ histories give the action emotional weight. Several reviews find that personal resentments and flashbacks deepen an otherwise familiar struggle between good and evil. The strongest enthusiasm comes from critics who see the film as a substantial reward for the series’ fans.
Reservations centre on repetition, structure and how much prior knowledge the film requires. Even favourable reviews find the stopping point unsatisfying, while Collider argues that the episodic construction weakens its cohesion as a film. The spread is largely between enthusiasm and qualified approval, rather than outright rejection. Accessibility produces a sharper disagreement: Screen Daily finds the complex mythology manageable for newcomers, whereas Deadline finds the lack of exposition makes the story difficult to follow without familiarity with the series.