Same, though I didn't edit Gorillas itself. I played that as a kid, then later (c. 2000) in my Intro to Programming class in middle school, I cloned it in Pascal. I even randomly had it select a day or night background, with a randomly positioned sun or moon. Still think back on that fondly :)
This game basically got me into programming, because you could easily edit the source code and then see how the game changed.