I don't entirely get mad, well, violent, at least.
Except once.
Me and my friend were playing DragonBall Z Budokai 3, and it was like our addiction. I usually don't lose in that game, but if I do I understand and don't really care. But this one time, my mom was there yelling at me to do chores (and my mom is a BITCH... and even then that's too weak of a word to use for her), so I was like, "Wait, my friends are here and stuff." So I kept playing as Super Saiyan Future Trunks (I mean c'mon, he's so friggin' ultimate and badass) and my friend used Kid Goku (who would get tooled on by Trunks in any other fight), but my mom kept bitching. I lost focus, and I got tooled on instead by my friend. By then I essentially told my mom to fuck off (she was heading out the door anyway), then I got KOed. I was so pissed, I got blinded by my mom's piss-assness, dropped the controller on the ground, and picked up the nearest thing. It happened to be an empty Pocky box (me and my friends love that snack), so I took it without hesistation, squeezed it, and as my friend was saying "Hey dude, you alright?", I pounce on him and start... "thwacking" him like no friggin' tomorrow. It took the other two guys (each about twice as big as me) to pull me off the victor. I was still blindly raged and they ran off home. (All of this [from the box grabbing to the running off home] took about 10 seconds to happen) The next day we laughed it off, but currently we are all cautious off the infamous "Pocky Box Mode".
Other than that one incident, I don't have game rage. Well, the closest to that would be me straining my face and blood vessels while I'm trying to get 0.00 on that damn Chocobo Balloon Sun Sigil quest for Tidus in Final Fantasy X.