Marvel's Secret Invasion finale has become the MCU's lowest-rated episode ever

There's been another misfire by the team at the Marvel Cinematic Universe.

Secret Invasion, a series that has been roundly panned by critics and audiences alike, has just achieved a new low.

The series' final episode just received the lowest rating on Rotten Tomatoes that a MCU project has ever received on the review-aggregation site.

The six-episode series, which stars Samuel L. Jackson and a big-name ensemble, earned an abysmal 13 per cent.

There are only eight reviews up on the site at the moment and seven of them are negative.

Sam Barsanti from the AV Club wrote: "I think, as a whole, the series was a waste of time, a waste of Nick Fury, and a waste of good performances from Samuel L. Jackson, Ben Mendelsohn, Emilia Clarke, Cobie Smulders, and Olivia Colman."

Fletcher Peters from The Daily Beast said: "Although the Nick Fury-focused drama seems to think it went out with a bang, the series finale opts for a whimpering, wheezing final fight and boring repetition."

And Jeffrey Lyles from Lyles' Movie Files added: "Secret Invasion ultimately ended up feeling like the first of the Disney+ MCU series that’s best left ignored and forgotten entirely."

The rating and reviews come after Disney CEO Bob Iger announced the MCU would be making less content and concentrating on quality.

“You pull back not just to focus, but also as part of our cost containment initiative. Spending less on what we make, and making less,” Iger told CNBC earlier this month.

Iger said pumping out the content has diluted the company's focus.

“Marvel is a great example of that. It had not been in the television business at any significant level, and not only did they increase their movie output, but they ended up making a number of TV series,” said Iger.

“Frankly, it diluted focus and attention.”

In March, Iger said the company needed to assess how many sequels each character in the Marvel Cinematic Universe should get.

“Sequels typically worked well for us,” he said during the Morgan Stanley Technology, Media and Telecom Conference. “Do you need a third and a fourth for instance? Or is it time to turn to other characters?”

“There’s nothing in any way inherently off in terms of the Marvel brand.

"I think we just have to look at what characters and stories we’re mining, and you look at the trajectory of Marvel over the next five years, you’ll see a lot of newness. We’re going to turn back to the Avengers franchise, but with a whole different set of Avengers.”