How To Hack Online Games

You can only hack flash games or parts of a game which are made with flash.
But it all deppends on what game you are hacking.
Bacicly, you download cheat engine. Go to your game. If your hacking health xp or money ( there the usual you hack ) you would put that amount times by 8 into cheat engine and first scan. You would then go into battle or what ever again ( don't buy any thing ) so that you lose health or get xp or money, and then times that by 8 and put into cheat engine. You would do that till you had 1 to 3 address's, you would then double click the address (s) so that they appear at the bottom of cheat engine then right click on the address (s) and change the record - value to 99999999 ( or what ever )