I SAID... I'M PERFECTLY FINE...

=3

From personal experience, yes a short term effect.

We used to play a couple of rounds of Duke Nukem 3D and Half-life death match in LAN at work at the end of the day. That got everyone amped up and drive home more recklessly afterwards.

Currently my kids have similar effects. They act out what the Lego marvel superheros do and run around swinging foam swords at each other after playing. My youngest gets most violent from Mario though, already has quite a temper when he keeps missing a jump. I have finally settled down and have not broken a controller, wii mote, mouse or keyboard in the last 5 years. Well, maybe not completely, the casing of one of my DS4s is a bit misaligned :/

Playing GTA too long makes me feel like I could drive off a freeway overpass to save time obeying silly road laws.

If anything, Splatoon makes me an angrier person than any other game.

The immediate effect of adrenaline rushes, frustrations and oth3er emotional hromonal responses from playing games can certainly lead to immediate violent outbusts or acts (verbal or physical). Throwing controllers across the room, yelling at your Mum / wife / girlfriend / husband / boyfriend / otherkinfriend when she/he/it tells you to stop playing and set the table for dinner, yelling at the screen, smacking your fists on the table / couch. All that is directly linked to the act of playing a video game. However it is not connected to video game violence. Any game that has sufficient intensity and capacity to frustrate will lead to the same outcomes no matter what level of violence in the game. When emotional hormones are high and nerves are freyed then there is a lingering effect for a while after finishing play, but it abates after a few hours, so long as your attention is on other lower stimulating things.

In terms of sociaological effect, I think it is unlikely that violence in video games will make you a generally more violent person in social situations. People who are violent and emotionally unstable are likely to be as bad with or without exposure to video games. It is a well known phenomenon to use images and music to pump people up and motivate them to do violence. You listen to the music soldiers play on their music devices before they go out to face the enemy and there is a common thread, even if the styles are very different. They are not calming mood music, romantic balads or sad songs of heatbreak and loss. Video games of a certain type can be used to similar effect, to get people hyped up to do violent things they might not normally do. If this exposure and association to fighting and violence carries on long enough, then conditioning can occur which might increase the risk of violence as an inappropriate response in a civilian setting. But that's not the fault of video games, it is the fault of the people who use video games as a pre-battle hyping tool. 

I kept losing in Mario and slamed the Wii U GamePad and the back part nearly broke off

Yeah, but you can say that to practically anything. Books like Harry Potter are violent, yet the vast majority are still sane. It's just that video games unfortunately have the rough end in the stick as the sole blame for some stupid reason.

Possible factor in contributing to a person's tendencies, yes, but the range varies from one person to another, depending on their mental stability or innate violent tendencies. To some, the effects are virtually non-existant, to some they could be slowly creeping up within the subconscious.

The same can be said for ALL types of media (books, movies, etc.), although in a game you are more involved in the act. But because the visuals are still not beyond "fake", most people see through the illusion and simply take it for entertainment.

I imagine that if in the future we do have the tech to render a perfect imitation of life, a lot of people will be put off from playing violent games.

I'm amazed at how durable the gamepad is, ours has fallen on the floor many times and still works. The Wii motes were the hardest to break of all controllers, yet I still managed to break one in half with my hands. The last level of Zack & Wiki was infuriating. I never finished it.

I just started GTA5, that kinda violence doesn't get me fired up anymore. I had to quit as I couldn't keep my eyes open anymore. It still makes me laugh, characters that carry on a casual conversation in the car while I drive over pedestrians, get in a head on collision, roll the car over 4 times, land on its wheels and continue like nothing ever happened. The conversation never missed a beat. The shock value of violence in games has long gone :/

I think there was a study that showed that kids who played violent video games were less likely to be violent then those who don't.