I used to, until a few years back they started using nProtect GameGuard - that's probably what the previous poster's virus scanner picked up, because it acts like a virus. It's intended to prevent cheating, but it's arguably more invasive and virus-like than the dreaded SecuROM DRM software. It's a shame because it was a fun and addictive game but it's not worth it to me. Took half an hour to manually remove GameGuard after I had uninstalled the game (that's the only way to get rid of it)