How GOG.com Saves and Restores Classic Videogames
I used GOG to buy the original Master of Orion. Randomly throughout the game, to stop piracy, a screen will pop up and ask you to identify the name of a ship. Back when the game was release, the instruction booklet was the only place to get this information. If you clicked the wrong ship name, the game would exit.In the GOG version,  you can click on any ship and the game will continue. I was very impressed that they kept that small detail while providing an easy way around it. It really brought be back to the early 90's, playing the game round-robin with my father.Frighteningly, since I hadn't played the game in 20+ years, I realized I still actually remembered some of those ship names.