Note: I rate my overall score based on my enjoyment!
MAL's synopsis explains it:
"Carnival Phantasm is an adaption of the manga "Take Moon" by Type-Moon's Eri Takenashi, to celebrate Type-Moon's 10th Anniversary.
Carnival Phantasm shows parodies and new stories loosely based on Type-Moon's original works like Melty Blood, Fate/Stay Night, Tsukihime, and more."
This amazing spin-off,of two really serious works makes it so you can enjoy the characters and laugh like crazy every single episode.
Story: 10/10
The story isn't really the best thing in this spin-off,but every single episode with it's huge number of awesome characters makes other ways the story could have gone,and it displays how would the characters live they're normal days.This was really well done that you will laugh like crazy. (At least I did!)
Art: 8/10
The art is really pretty,but it does have errors in some points of the OP or in some scenes,but if you don't pay attention to them,and trust me you won't even notice them,you will really enjoy the art stile of this OVA.
Sound: 10/10
All of the cast members from they're own series are back,and every single voice is done in a great way.The OP song is easily lovable same goes for the ED.Off course since this is a happy spin-off,the sound feels really happy.
Character: 10/10
Every character acts the same but with some humor added.For example Lancer gets killed in most of the episodes and Riesbyfe,Satsuki and Sion have a stand up comedy group called "Back-Alley Alliance" and trust me you will enjoy they're stupid jokes.And then you have the "next episode preview" where Illya and Taiga try to give you the preview of the next episode,and off course you will enjoy it!
Same goes for the rest of the characters,you will enjoy them all!
Enjoyment: 10/10
As a person that only watched fate/stay night,After this awesome OVA I cant wait to watch the rest of the series and give Melty Blood a try.I laughed at every scene at least once,and singed with the OP and ED every time.So in the end I really enjoyed this OVA!
Overall: 10/10
I didn't really expect much of this OVA,but I'm happy that I gave it a try,since in the end I ended up really enjoying it.And I would be really pleased for more of this!Fans of the Type Moon visual novels,and fans of the Fate series will enjoy this for sure!
Give us a SEASON FOUR! :D