Garry’s Mod is a sandbox mod for the Source Engine. Unlike normal games there aren't any predefined aims or goals. Players are given tools and are left to entertain themselves. The player is in a world where objects can be created and destroyed on demand. Where people can be created and destroyed with the click of a mouse. A world made for him. A world he made.
In fact, not harmless at all.
Gordon Freeman will became Zordon Freeman and try to eat Alyx... literally lol
let's see, yes, you did it right.
Oh wow, floating Freeman?
Yeah, didn't you know? HE CAN FLY NOW!
He always could.