I am also very thankful for the source for Gorillas and many simpler BASIC games before it. I started out by adding color to many existing text BASIC games and then moved on to writing my own.

Years later a friend of mine and I added modem support to Gorillas so we could play each other from our houses. Of course Scorched Earth would have been better, but we didn't have the source to that, nor the programming ability to add it at the time.