For his last year at Historicon, Duke brought 14 games and ran them (with the help of numerous volunteers) throughout the weekend. There was a special area set aside just for these games, and they were all always full of players. After the show, everything was available for sale (I didn't check the prices: "if you have to ask...")
Here are some pictures I took of the highlights. It's hard to convey the scale of these games in pictures. They are simultaneously really big and highly detailed at a small scale. The miniatures were definitely painted to "convention gaming" standard, but when you put this many 25mm figures on a table at the same time, it looks impressive even with a basic paint job.
I think this game is Zulu! with Isandlwana Mountain in the distance. It stood taller than me, and the table was probably 15-20 feet long. The rules were a variant of The Sword and the Flame.