9 Screamers all at once
The video is 9 screamers running simultaneously. These are, from top to bottom, left to right: K-fee car commercial, The Maze, Luna Game 1 and 3; SCP-450, Proof of Michael Jackson's Ghost; Ghost Caught on Tape, Stickman Screamer, and Luna Game 2. At 36 seconds into the video, the screamers will all go off at the same time; the shorter screamers are delayed and appear at a later time in the video, to properly sync with the longer ones.
There is also another version, 9 Screamer reactions all at once uploaded by the same user - as the title implies, the majority of the video is about people reacting to screamers.
The original video has accumulated over 450,000 views.
NOTE: The following video contains screamers!
- Permalink: bit.ly/38dUDWd