GOG is a bastion for classic games that we grew up with that we can once again purchase (for a cheaper price) and get to play with. The great thing about GOG is that you will never have to worry about losing your copy of your most beloved classic game as they keep it for you as part of your collection in their site and which you can download anytime you want. And best of all, it is DRM free!
Check back often with GOG as their might be more interesting offers the next coming days as part of their summer sale.