What shocking websites did you visit on your browser, Kusu? :P
That probably gave you a virus.

it's not from the game it's from ur pc/laptop, it usually happen after u installed some pirated software or after u visited unknown/non-trusted website, try download adwcleaner and only download it from the official website, it's the best software to remove adware i myself pesonally using it This post was last edited by Adrian Martin at 2017-1-23 21:31

Very long story, i never touch adwcleaner before... It happen since 1st time i play, but just close-open will disappears. Lazy, but got clear today after posting the thread.

Hey

Would suggest giving your PC the good oi cleanup.
Malware has a habit of returning if left unchecked.