It seems that you're using an outdated browser. Some things may not work as they should (or don't work at all).
We suggest you upgrade newer and better browser like: Chrome, Firefox, Internet Explorer or Opera

bebablom: Download GK3 in my computer with GOG Galaxy beta edition
When i press play opens a dark page that writes <insert the cd1>
If i have not the cd What should i do?
Hi Try reinstalling the game. This should help.