In-game: In Halo 3 I killed all of the Covenant except two grunts. They freaked. I slowly shot them to pieces.

GoW2 - Locust downed my friend. I joined in with the locust, T-bagging my downed friend.

Diablo 2 - told another player that wanted to dupe one of my items that, to do so, all he had to do was hover his mouse over the item and press "Alt F4".

Spoiled the (albeit slightly anticlimactic) ending of Fallout 3 for my friend who, despite being a huge Fallout fan, had waited until Christmas to get the game. He didn't speak to me for 2 days.

Also on L4D, when faced with a tank on Expert, I rallied the two remaining members of my team to stand and take on the charging behemoth, convincing them that "Together we can take it, we're so close!" then legged it for the nearby safe room and left them both to die at the hands of the gargantuan mutant in the resulting confusion.

My friends and I made a infected map where the survivors start in an elevated "base" filled with weapons, grenades, turrets, and fusion coils. The coils were there to keep the survivors from sitting up there all game.

I stuck my friend in the back, ripped off a minigun, & jumped out. The explosion took out my whole team and sent all the ammo flying across the map. It was worth it.

TheMushroomClub:

BudZer:
I loudly played "Soulja Boy I tellem" over the mic while having my 11 year old cousin loudly talk about how awesome he is at Halo 3 while playing Call of Duty.

I would like a medal.

That was epic. You deserve a medal.

Or incarceration. That is some evil stuff.

As for me, I guess it was when I was at my cousin's house the Christmas Eve before last and we were playing around online in Guitar Hero III. We messed with some people on matchmaking. We'd talk to the other player and ask how good they were, and we'd flatter them, basically do anything to go on Expert difficulty. We'd pretend that we'd get on Expert, and right when the other player selects that difficulty, we'd go to Easy, quickly go to Through the Fire and Flames before they could log off, and unfairly smack them down. It was wrong, but funny in a sick sort of way.

Anything with full PvP just taking newbs out into the woods so I can whack them then loot their corpses then just send them nasty messages about how fun it was.

Oh when I used to play LOTRO I would be a total in game bigot. If any group brought in a Hobbit I would immediately drop after flooding the party channel with how much I hate hobbits it was always good for a laugh. Or just going into a teamspeak server and screaming like a madman or playing on steam DJing obnoxious White Power music in Red Orchestra.

Playing (high-level) tanker on an mmorpg and I left the (low-level) party right after pulling in a swarm of tough baddies. Needless to say, it was a slaughter. People should be nice to me. :P

Wasn't quite evil but was still evily amusing

Playing CoD5 Co-Op with my friend, we were playing it on Veteran, he got downed, yelling at me to revive him, so I kill off any more Japs before walking over and T-Bagging him, then reviving him, than stopping just before he was fully revived, then T-Bag some more before throwing grenades at him

BrynThomas:
Microwaved Mario Party 2 for 64

How did that go? Can you give us some details?

Well game wise I guess would be in GTA: Vice City. During one of my many many rampages in that town I pretty much waited for the medics to patch up some police officers before hitting the whole group of with a rocket. It was also close enough that it hit their van which exploded backwards into a parked squad car which then exploded as well. It was a fun day.

Rape, arson, murder and rape.

I like rape.

I also kicked a baby, once. Not mine. True story.

Then there was the last time I visited Florida, back in 2000. I started a bonfire and circled it backwards, chanting voodoo death chants, while throwing about 300,000 Democrat ballot papers into the flames.

I killed a man in Reno just to watch him die.

Cant remember really, but the time i knocked down the routers at my old school was kinda mean, seeing as it was a computer school alot of people were using the internet for all kinds of imporant stuff such as school projects, important conversations with people at other schools, lesbian porn and all manner or important stuff.

In real life or...?

hubertw47:

XxFear ItselfxX:
Play versus on Left 4 Dead with 7 other people and shoot the car with the car alarm. Your team will hate you. Do this on co-op on expert to lose friends.

Or kill them just as they enter the armored car on blood harvest.

Wait in the safehouse to ambush the survivors. They will never close the door fast enough to stop the horde from chewing their puked-up bodies.

Got another one!
Molotove the back of the Stryker (the armored car). The AI will never go through the fire and shoot anyone that tries.

In GTA 4 when I tried to kill someone with a knife I was so horrified by the realism that I had to stop.

ExplosionProofTaco:
I sacrificied my 8 wives to the temple of shadows in fable 2

gave a little kid on yahoo! answers a link to 1guy1jar saying it had pokemans cheat coded.

Dare I even ask what it is? It is probably better if you tell me in a PM.

On GTA4 my friend was in a car and guided a motorcyclist into a freeway sigh. Then he proceeded to run over the body for 15 minutes.

this was not my evil but it warrents a mention
was doing a 10man raid of zul'grub and we had just killed the final boss after 2h of work then before we can do anything one sorry fuck steals all the loot and runs out.

I hope he dies a horible spork related death. (hint hint)

..burned my companion cube T.T

handofpwn:

ExplosionProofTaco:
I sacrificied my 8 wives to the temple of shadows in fable 2

gave a little kid on yahoo! answers a link to 1guy1jar saying it had pokemans cheat coded.

Dare I even ask what it is? It is probably better if you tell me in a PM.

erm...what was it?

What have I done?!

In fallout 3, in the first actual town you arrive in, I killed all the people except for Gob and a hooker before I went and nuked it from the apartment. I then proceeded to kill everybody in said apartment. Its impossible not to be evil in that game (at least for me).

Nothing you do in a game really qualifies as evil. That being said, an old landlord stiffed me $100, so I set city, state, and the IRS after him. On legit grounds, too. Cost him a hell of a lot more than $100...

Lessee... My ex-girlfriends best friend sabotaged my relationship. (her evil, I know, but it still deserves a mention.) In Zul'Farrak I opened a bunch of the tombs and let a mob kill my party. It was really funny. I once erased a couple of my friends gamesaves after he pissed me off. I sentenced a man to death by snoo snoo.

Now, while not evil, this was mean. Sort of to myself, too, oddly enough.

I was co-managing the Redskins in Madden '05, and we had a game against my best friend's Buffalo Bills. Problem was, he was out of town, and it was the last game of the week. So I took over as the Bills and proceeding to run train on my team and co-manager. Abused the crap out of him/us. Ran back the second half kickoff, in fact. Yeah, it was kind of ugly.

chronobreak:
This kid owed me 200 bucks for coke back in my dealing days, I told him to give me the money, I even gave the kid 2 days to pay me, but he was avioding me and not answering my calls and whatever. So, I went to his house, when I knew he was there, and he was trying to hide with the lights off, but left the tv on. I kicked in his door, beat the snot out of him, and took a watch, xbox, food, a bottle of vodka and some other stuff right in front of him, and used his own bag to carry it all out. Stupid kid prob had to pay at least 200 just to get his door fixed.

Also, I do not advocate drug-dealing, or doing drugs at all. It was just a rough time for me and my family.

You are forgiven...

As long as you don't mention again that you beat the snot out of him.

I mean, you were in a tough situation, and any kid stupid enough to smoke crack AND piss off a dealer deserves it.

CountFenring:
I killed a man in Reno just to watch him die.

I killed a man in Reno, but I can't tell you why.

partyed up with a bunch of noobskilletts in wow that did or said somthing that bugged the hell out of me so i aggroed a decent chunk of the instance and plug pulled ,when i came back online i told them that my puter seized up and froze and inquired what i missed muh hah hah

Let's just say I've been number 1 on multiple death lists. (was 7 on 1 of them, got upset and worked my way upward).

My younger brother, the dick that he is, spends all his time playing Left 4 Dead screwing around (doing stuff like attacking the Witch when we're near the safehouse, with little ammo and no spare medikits or pain pills, or chucking molotovs directly into our path when we're running through a hallway or tunnel, or even killing us right before we enter the safehouse), and my cousins and I were getting tired of it, so we acted like dicks back. If he died, we didn't rescue him. If he needed healing, we never gave it. We'd leave him behind to get whupped by Hunters and Smokers. The ultimate moment was right before every subsequent finale, I'd use the console cheats to spawn 3 Tanks right on top of him. And do the same before he entered a safehouse, but I'd shut the door first.

I dunno if it's "evil" or "righteous justice!" but seems pretty bad to me.

xXyZaThEx:

CountFenring:
I killed a man in Reno just to watch him die.

I killed a man in Reno, but I can't tell you why.

I killed a man in Reno, oh my oh my.

I hit my mother in the head.

In games, it's got to be the Morrowind Killing Spree, otherwise known as "Because I can and because there ain't anything else left to do around here." One thing that disappointed me about Oblivion was that I couldn't kill every named character in the game.

Outside of gaming, I've driven someone to suicide with no remorse. After he killed himself all I said was "Good, now I won't have to do the time for killing him myself. The world is better off without him." (a very, VERY long story from 15 years ago...)