I was able to briefly play the pre-release version of this game, before deciding that I would rather wait for the full release.
Unfortunately, I am now unable to launch the game; doing so causes a 'waiting' icon as if the game is about to launch, but nothing happens. The GalCiv3 process is briefly visible in the task window.
I have tried everything in the troubleshooting forum, both with the current stable game version and the beta opt-in version. I sent a support ticket with my system information last Friday, and have not heard back at all.
System Specifications...
NVIDIA GeForce GTX 660M
64-bit Windows 7
i7-2670QM CPU @ 2.20 GHz
I have seen numerous other users with this problem, but have found no tenable options (in fact, several guides involve downloading suspicious software, which may indicate how persistent this problem is).