I have downloaded many many games from The Adventure Shop ( click on the banner on this site ), Amazon, and, GOG.
I now prefer it since I cannot find these games in my area in any of the usual stores you would expect to find them!
Use their respective Download Manager whenever you can - makes it a "one click" download and it keeps track of your downloads.
They use your email to send you an unlocking Key you will need to play the game.
Everyone's experience may be different but it has worked flawlessly for me.
