http://imgur.com/bSB6J9l
I was playing a modded game of Civ 5 when I noticed this started happening to the notifications. Later it spread to other things, all of which were Icons (Decided to ignore it and left my PC to run a AI battle over night. The screen was flooded with it by morning). I managed to track down the issue which was something to do with this mod, or the Battle Royale Data mod.

Any clue what is happening or any ways to fix this?

(Knowing me I missed something in the description. And don't worry, I read it a second time before posting this)