I hope this doesn't sound too stupid, but I have Salvation Prophecy on there mainly because I didn't realise I could buy it elsewhere at the time. How can I 'back up' the game exactly? I always thought I needed to sign in to GG if I wanted to play on another machine?
Can I just grab the files and plop them anywhere I like?
Does the game come with a download link (don't have this one on GG)?
If yes, follow the instructions given here
After you're done, you can (re)install your game without ever having to go online or log into GG.