Drayton359: How do I update the game, didn't install the optional GOG software.
Does the game let me know it needs updating and I do it manually or does it do it automatically ?
If you really don't want to use GOG Galaxy, then you just download the installer from the web-site and install. Later on you can come back to your GOG account and go to Library (it's under Account menu at the top). A little below there will be "My Collection( N )" drop-down menu where N is the number of games you own. In the menu there are two options: "Updated" and "Hidden". You're interested in the former. If the number beside it is more than 0, it will be clickable. Select the option and find your game. Sometimes it's a new version, sometimes it's a simple patch.
None of the GOG games I've ever installed has updated itself, and it's about a hundred I think. To get automatic updates you'll need GOG Galaxy which is in a pretty stable state right now. You can choose manual/automatic update per game, auto mode by default.