Black Mirror Season 4 has been on our screens for five days, so any self respecting fan will have definitely watched all six instalments by now.

If you haven’t, hit close because spoilers are coming thick and fast in our first data analysis of the year, reviewing the new episodes.

We can be confident that most people have started watching because we tracked nearly a million tweets and posts on the Black Mirror subreddit between the show’s release on December 29th and Monday 1st (ET).

With millions of posts to analyze, we decided to review the season by looking at how the different episodes were discussed.

Black Mirror Season 4: The Episodes

First of all, which episode generated the most buzz?

Kind of predictably since it was the opening episode, USS Callister generated the most mentions, topping 46k across Twitter and Reddit.

The space-themed episode, in which a guy steals people’s DNA and puts them inside his own personal video game where he is the hero, is undeniably a great start to the season.

USS Callister was followed by Hang the DJ, where an app dictates how long your relationships with random people will be and things go surprisingly well. It got marginally more than Jodie Foster directed Arkangel, an exploration of parenting in a world where almost anything is digitally possible, and how it can all go wrong.

Which was the most discussed on Twitter, and which on Reddit?

Since we were looking at both Twitter and Reddit mentions we decided to split them out to see if people were talking about the episodes differently on the different platforms. It turns out they do quite significantly.

What seems clear is that those who hang out on the dedicated Black Mirror subreddit are more likely to have binged their way through the episodes than general tweeters, with less attention directed towards the earliest three episodes on Reddit.

Metalhead, which is the least mentioned episode on Twitter and overall, appears to get more of a fair shot on Reddit, with conversation about the shorter episode, in which a woman tries to escape a deadly robot dog, getting around the same amount of debate as Hang the DJ.