Avengers: Endgame is the culmination of the 22-movie Infinity Saga, which began with Iron Man back in 2008.
It’s also a direct sequel to last year’s Avengers: Infinity War, with principle photography on the two taking place back-to-back.
Infinity War concluded with one of the most shocking cliffhangers in movie history – after setting up the huge threat our favourite heroes all faced as Thanos pursued the Infinity Stones.
So how can it be streamed?
In the UK, Avengers: Infinity War remains on Now TV as it continues rotation on Sky.
Subscribers with a Sky Cinema Pass can stream all 143 minutes of it right now.
Users without an account can get a 7-day free trial, with the monthly price set to £11.99.
It’s worth noting that Ant-Man and the Wasp – which is set in a similar time-frame to Infinity War – is also available on NowTV, as are Thor: Ragnarok, Black Panther, Guardians of the Galaxy, Spider-Man Homecoming and Captain America: The Winter Soldier.
Alternatively, a digital download of the movie can be purchased for £9.99 from Amazon Prime Video, or £17.99 in Ultra HD.
In the US, Avengers: Infinity War is still on Netflix.
Thor Ragnarok, Guardians of the Galaxy Vol 2 and Black Panther are also on the popular streaming service in North America.
The more recent Captain Marvel is not yet streaming legally online – it only came out in cinemas last month.
Avengers: Endgame, meanwhile, is released on Thursday in the UK and Friday in the US.
The first reactions from last night’s LA premiere are exceptionally positive, keeping it on track to become one of the most successful movies of all time.
Beyond July’s Spider-Man: Far From Home, Marvel have yet to announce any additional film releases.
Avengers: Endgame is out on Thursday in the UK.