Captain America: Civil War(2016)
Following the events of Age of Ultron, the collective governments of the world pass an act designed to regulate all superhuman activity. This polarizes opinion amongst the Avengers, causing two factions to side with Iron Man or Captain America, which causes an epic battle between former allies.
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I love all the marvel films but this one is my absolute favourite. To me it should still be the third installment of the Avengers films as the whole gang are there (except Thor and the Hulk,) but the film doesn't suffer because of that. If you haven't seen the film I highly recommend this as enjoyable to watch and story is great, plus you get one of the best fight scenes until Infinity War.
I've been a fan of Marvel since forever. I watch all the Avengers movies all the time so much so that i annoy my family when they are woken up to the sound of the Avengers kicking ass. I was kind of disappointed that they didn't really go anywhere with the enhanced individuals, but who cares. there's fighting, explosions and even more Marvel heroes. yay.
If you like superhero films, you'll like this. If you don't like superhero films then you're unlikely to be converted by this one, although it's an excellent example of the genre. I grew up on Captain America and am very happy with how the character has been translated to the big screen.