what is the drop chance for BullTrap coin?

Either I'm blind or there is no exit button? (I'm using the beta version)

I clicked on the bomb, but achievement not dropped

when installed on mac it installs an empty folder and there is no game

Okay can anyone tell me if this song from the steam store video is a real song? It is so good and I tried to find the artists but couldn't. I know the song may not be real outside of the game but I would still like to find out who made it!