I doubt it has anything to do with Windows 8, but rather your browser or an add-on that is required such as Flash. Usually there is some kind of message saying a plug-in is needed to display a website, but I've had this happen on a couple of computers with new installations of Windows 7 and there was no message. I assume you're using IE10? I would contact Gamersgate and ask them.

Draclvr is probably right. Your problem is more likely due to IE10 than Windows 8 itself.

Have you tried a different web browser -- like Firefox, Chrome, or Opera?

Hmmmm. Installed Chrome and tried it that way but still can't get the webpage up. I did receive message saying the server sent no data which is more than on Google. I have tried replying to a previous order email from them tho I suspect that is probably auto generated so am not going to hold my breath! I've only ever bought one game from them so have not lost much luckily but I do browse them regularly.
Oh well. If anyone hears that they've tweaked things please keep me posted

If you enter
81.201.212.158
into your web browser's address bar instead of
gamersgate.com
or
www.gamersgate.com
does the Gamersgate site come up?
If Gamersgate loads for you using the IP number, you're having a DNS resolution issue.

Also, is it possible you have a firewall (or an antivirus suite that includes a firewall) that could be blocking the Gamersgate website?

One thing some web browsers have started doing by default is going to the https version of the address instead of the http version. This causes some websites to hang, since they have no https version of the homepage. Web browsers usually automatically change to the http version after a short time if there is no https version, but this doesn't always work.

I tried the IP address route and disabling firewalls and still can't get the webpage to display. Think I'm gonna give up

Big Thank You to Draclvr. I have very few of these games and don't have Windows 8 yet but I appreciate the effort you went to to record and share this.

Here's hoping I will get to personally try these games on Win8 soon.

Thanks, Bob. I'm plugging away at it as time permits. I'm hoping that people who have games that I don't will check them out so we can add them to the post.