DOTA, Guild Wars, Pirate King online... you name it.
To win a guild war, there's always ONE trick you can use
USE TWO ACCOUNTS
Play as two characters, one character on the "good" side, the other on the "enemy's side".
You need to play the "mole" well. Sabotage the team u want to beat but
don't make it too obvious, and tip off the team that you want to win.
I'm not a gamer per se, my friend is, and he started using this cheat after watching "The Mole".
HAHAHAHAHA!!!
And it worked!
Really well.