We're running Parallels 8.0.1.18494 in a fully updated Windows 8 environment. Our Steam version is also fully updated to the current version. When we launch a game called Cities in Motion the mouse disappears. When we click the mouse button, the entire screen begins blinking rapidly. We can switch to any other app – say, back to Steam – and the blinking stops. When we switch back to the game the blinking begins again. I've tried adjusting the Windows video settings as much as Parallels allows, but haven't been able to alter this behaviour. Anyone know why this might be happening?