I'd like to make a save/restore GUI where the player can select from a bunch of save slots and the screenshot in their saved game would appear over the saved game name, similar to how Fatman did it. However, I have no idea how to do this. Can someone help me with this?
I'm pretty sure that Fatman (like Calsoon 2) cheated and used pre-made sprites of each location. A recent addition to AGS should however allow you to capture the actual screen and use it as a savegame thumbnail. Take a look at this thread in the in the technical archive:
http://www.adventuregamestudio.co.uk/yabb/index.php?board=10;action=display;threadid=10802