The Explosion is a mysterious concept in Digital Haunt. There have been many references to it, but it is unknown what it actual is. It is linked to the theme of destruction.
References to The Explosion Edit
Sparkles*'s Tumblr is called Edge of the Explosion. When asked about The Explosion on tumblr, he said to "think less about what the explosion is doing, and more about what it actually is."
Drop the weights, accept my fate, and trigger the explosion.
...from our vantage point at the edge of the explosion.
How can I stay here and rust when I'm set to explode?
In the full cover art of All The Lights In The Sky, there is a large yellow part of the image on the right, which is likely The Explosion. Cassandra is therefore standing at the edge of the explosion.