Antivirus. URGENT. Please help! (ANSWERED)

Wrecker3902

So basically, I was downloading Cubic Castles on my computer because I played on my iPad and I loved it. Problem is, my antivirus (AVG) keeps on putting a file of Cubic Castles' in it's quarantine. What does this mean? Is Cubic Castles for computer a virus. I'm seriously worried, so please suggest anything.
Oh yeah, also when AVG quarantines the file, it blocks it, meaning I can't play because it may be unsafe. Please tell me if its safe or not.

SpaceChicken

it is safe

Wrecker3902

Ok thanks @*>;Remo<*

Professional Killer

Locking it up as it has been already answered.