I had a similar experience with Gorillas. I started exploring the code and noticed a variable called banana. I didn't realize changing a game was so easy, so

I had a similar experience with Gorillas. I started exploring the code and noticed a variable called banana. I didn't realize changing a game was so easy, so I changed the variable to baby. Unfortunately, it wasn't so easy, and inexplicably the gorillas continued to throw bananas. Understanding why is what got me hooked.