Related: Shaun of the Dead, Hot Fuzz - first two movies in the Three Flavors Cornetto Trilogy. The movies themselves are unrelated plotwise.
Similar: Scott Pilgrim vs. The World - due to the randomness of the plot.
Upsides: Random, Funny, Crude, Intelligent Plot, The Entire Cast.
Downsides: For me, none. For others, the beginning might be too slow or the story might feel to random.
I have seen Shaun of the Dead and Hot Fuzz many, many times and now I have finally finished the Three Flavors Cornetto Trilogy. The World's End was simply stunning.
Although Edgar Wright and Simon Pegg completed the Trilogy in perfect fashion, this movie was drastically different. There were surprisingly few nods to the previous two movies (don't worry the fence is still there) but it was actually very welcome, especially if you marathon the Trilogy. With the movie being about the same length as Shaun of the Dead, fewer nods gave them more time to let the story go where it wanted.
The World's End adds a whole new element to the Trilogy with a fresh story that takes our familiar faces and launches them into a story that takes a while to get going but quickly runs rampant.
Everyone in the movie did a wonderful job but Simon Pegg and Nick Frost stand out from the rest, especially including their past personas. It was a thrill to get to see them play entirely new roles that did not fail. They were even extremely relatable, most notably being Simon Pegg's character of Gary King. (Parts of his story does involve a trigger warning with depression along with another one that I will link here as it is a smaller spoiler. These triggers are not graphic on screen.)
The World's End is a fitting finale to the Blood and Ice Cream Trilogy and if you love Edgar Wright or Simon Pegg, you should have already seen this movie. I will watch this many more times before my world ends.