A computer program (written by Josh Bolton aka Toady) used for recording mouse and keyboard events in real time within a computer game. The recorded macro can then be played back at anytime with just the press of a single key that is binded to that particular macro.
Gamer 1: "Geez this game is too complicated, too many keys to press".
Gamer 2: "Hey, you should just record all that crap with Macrogamer and play it back by just pressing one key".
Gamer 1: "That sounds like a great idea, now I wont get carpotunnel!"