I showed my friend Game Maker 5 in 2007. We were both pretty young. It was quite the time. We didn't understand variables yet, so we had this insane system where were used Game Makers score system for variables. Once we figured our variables we felt on top of the world. Though we never wrote our own GML. We used to decomp other games and take code we needed straight out of other games and blindly re-work it into our own projects. What a good time that was.