Editing Nasuverse (section)

=== Carnival Phantasm ===
Carnival Phantasm is the obligatory comedy cross-over that all long-running Japanese series have to do at least once. It is very silly and is regarded with more or less universal praise.

That is to say, this is a 12 episodes anime worth of jokes. For the initial episodes it takes from the Take-Moon manga, but later episodes have the show's official content, with somewhat different tone and humour. Whether you like the simple gags at the start or the complicated ones later, you'll probably enjoy Carnival Phantasm more the more of the other stuff you've read.

Sort of received a sequel series named Fate/Grand Carnival which, as you can guess, focuses mainly on Fate/Grand Order what with both Tsukihime and Kara no Kyoukai fading from public consciousness.