Why Do TikToks Have Subway Surfers Gameplay?

7 min read · Brainrot Test

TikToks have Subway Surfers gameplay because the moving footage keeps your eyes busy while the main clip (a Reddit story, a podcast, a Family Guy scene) plays on top. It gives your brain two things at once, so you're less likely to swipe away, and more watch time means the algorithm pushes the video further. This split-screen style is called "sludge content."

If you've ever watched a whole five-minute Reddit story you didn't even care about, the format did its job. Check my brainrot and see how much of your feed is sludge.

The short answer

Here's the whole thing in four bullets:

• Watch time rules TikTok. Videos that people finish tend to get shown to more people.
• Split screen fights the swipe. If the top half gets boring for a second, the bottom half is always moving.
• It's cheap to make. Gameplay footage and AI voices mean a creator can post many videos a day.
• It started as a joke and became a format. People noticed it worked, so everyone copied it.

That's why you see Subway Surfers, Minecraft parkour, soap cutting and GTA ramps under basically everything.

What sludge content is

"Sludge content" is the nickname for videos that stack two or more unrelated clips on one screen, usually one to listen to and one to stare at. The term spread around 2023, when tech and gaming sites like Kotaku and Polygon wrote about the trend.

Sludge content meaning, in one line

Sludge content = a video built to hold your attention with visual filler, not with the story itself.

Common sludge content on TikTok

Sometimes it's three or four panels. At that point it's less a video and more a slot machine.

Is sludge content brain rot?

Pretty much the poster child. The word "brain rot" was named Oxford's Word of the Year for 2024, describing the feeling of consuming low-effort online content. Sludge content is about as low-effort as it gets: the goal isn't to inform or entertain you, it's to keep you from leaving.

Why split screen keeps you watching

Why do people put Subway Surfers under their videos? Because it helps with a few very human things.

1. Boredom gaps get filled

Every video has slow moments. A story takes a breath, a joke takes a second to land. In a normal video, that's when you swipe. In split screen, your eyes drop to the bottom and the runner is dodging a train, so you stay.

2. Motion grabs attention

Humans notice movement. Bright, constantly moving footage in your peripheral vision is hard to ignore. You don't decide to look at it. You just do.

3. It feels like less effort

You're not "watching a boring story." You're half-watching a game and half-listening. That low-effort feeling makes it easier to keep going, and easier to watch the next one too.

4. The algorithm rewards it

Creators don't need to know exactly how the recommendation system works. They just need to notice that split-screen posts get more views. So they make more of them, and you see more.

Reddit stories, Family Guy clips and Minecraft parkour

Each sub-genre has its own vibe.

Reddit stories on TikTok

Reddit stories TikTok videos take a post from a forum like "Am I the jerk?" style threads, read it with a text-to-speech voice, and put gameplay underneath. They often split one story into "Part 1," "Part 2," "Part 3" so you follow the account. Plenty of them are made up or heavily edited, so take the drama with a grain of salt.

Family Guy clips

Family Guy clips with Minecraft parkour below were one of the first big split-screen formats. Sitcom clips are short and quotable, which makes them perfect for this.

Minecraft parkour and Subway Surfers video for TikTok

If you're a creator wondering where the footage comes from: many creators record their own gameplay or use no-copyright gameplay compilations shared for this purpose. If you're making a Subway Surfers video for TikTok, recording your own run is the safest choice, and adding something you actually made on top is what makes it worth watching.

Why is there Minecraft parkour under TikToks, but not other games?

Minecraft parkour and Subway Surfers both have steady, forward motion with no confusing story. You don't need to follow them. That's exactly what makes them good filler. A game with a plot would compete with the top half.

Does it mess with your attention span

Here's the honest answer: we don't have a study on Subway Surfers specifically. But there is research on short-form video overall. A 2025 meta-analysis in Psychological Bulletin pulled together many studies and found that heavier short-form video use was linked with weaker attention and self-control. That's a link, not proof that one causes the other. People who already struggle to focus may also be drawn to short videos.

What you can notice yourself:

• Does a normal video (one screen, no filler) now feel slow?
• Do you need gameplay or a second tab to sit through a class recording or a lecture?
• Do you open TikTok "for one video" and resurface 40 minutes later?

If some of these sound like you, read why is scrolling so addictive and does TikTok ruin your attention span for the deeper version.

The tricky part is that you can't really judge your own attention from inside it. It's like trying to smell your own house.

That's why Brainrot Test asks about what you do, not how you feel: 17 questions about what actually happens when you pick up your phone, then a brainrot score from 0 to 100 and how you compare with everyone else. Check my brainrot

How to break the habit

You don't have to delete TikTok to cut the sludge. Try these, one at a time.

How to stop watching sludge content

1. Hit "Not interested" on split-screen videos. Long-press, tap it. Do it every time for a week and your feed usually shifts.
2. Search for what you actually want. Searching trains the feed more than passive scrolling does.
3. Watch one full thing with one screen. A whole YouTube video, an episode, a movie. Our brain rot movies to watch list has easy, fun picks.
4. Put the phone in another room for 10 minutes. It sounds tiny. It's a good first test of how often you reach for it.
5. Catch the "one more" moment. When you think "one more," that's the moment to close the app. Not after.

What to do instead

• Read the original story yourself if you want the drama. It's faster than a four-part TikTok series.
• Actually play Subway Surfers for a few minutes. At least then you're the one playing.
• Text the friend you'd send the video to and just talk.

Swap the sludge for a two-minute drill

You now know why the gameplay is there. The next step is finding out how much it's shaping your day. In the next minute, Brainrot Test gives you a brainrot score from 0 to 100. Each day after that, a two-minute detox drill (five slang words from this week's feed, then one real phone action with a timer) takes a point off your score, and it's re-measured every Sunday.

Check my brainrot

FAQ

Why do people put Subway Surfers gameplay on TikTok?

To keep viewers from swiping away. The constantly moving game fills slow moments in the main clip, which can increase watch time, and watch time helps a video get recommended to more people.

What is sludge content on TikTok?

Sludge content is a video that stacks unrelated clips on one screen, like a Reddit story on top of Subway Surfers or a Family Guy clip over Minecraft parkour. It's built to hold attention with visual filler rather than the content itself.

Are Reddit stories on TikTok real?

Some are taken from real posts, but many are edited, exaggerated or made up for views. Treat them as entertainment, not as true stories.

Does sludge content ruin your attention span?

There's no study on sludge content specifically. Research on short-form video in general has found a link between heavy use and weaker attention, but that doesn't prove cause and effect. If normal videos feel too slow now, that's worth paying attention to.

How do I get rid of split screen videos on my TikTok feed?

Long-press split-screen videos and tap "Not interested" every time, search for the content you actually want, and avoid watching them to the end. Most people see their feed change within a week or two of doing this consistently.