I know that this has not been reported for a while... Otherwise, PG wouldn't be a very good game... I can explain this by saying... Powdergame's BG-AURA failed. It came out as a strange, and moving "C4 and Frozen Thunder Background".
The picture is right here.
Let us calm ourselves and discuss this matter, and what our options are.
Well, if you payed attention to more of the details in the sandbox, you would notice that there are not enough pixels used to have that much Thunder and C4. The reason for that is... It isn't actually C4 or Thunder, this strange output that is supposed to be BG-AURA.