Carnival Phantasm is a oVA anime that premiered in summer 2011, produced by Lerche.

About the production: the story comes from a manga, there are 12 episodes of about 14 minutes and its current status is "finished".

Its main genres are comedy and supernatural, with themes such as Parody, Crossover, Nekomimi and Surreal Comedy.

On AniList, Carnival Phantasm has an average score of 77%, a very good score, and appears on 59,871 users' lists.

The Carnival Moment is a time when several narratives from Type-Moon's famous works intersect. It happens every decade in an entirely new dimension, and those who have never run into each other can meet. And what's more, all individuals involved gain the opportunity to fulfill any of their wishes! However, they will have to come a long way, as they will need to partake in contests. In Carnival Phantasm, various characters are put into situations that ridicule their own worlds. Nevertheless, they all have the same objective: to win the contests by any means necessary! (Source: MAL Rewrite) Note: Adaptation of the "Take Moon" manga series by Type-Moon's Eri Takenashi, created to celebrate Type-Moon's 10th anniversary. It features parodies and new stories loosely based on Type-Moon's original works, including Fate/stay night, Tsukihime, Melty Blood, and more.

Official synopsis from AniList.