oh, we thought you were talkin about runescape, lol.
anyways, if ur talkin about cheat engine, your wrong. everything you do with cheat engine will be client sided, meaning, if you hack a non-flash serversided multiplayer game, it will show that amount for you, lets say you give yourself 5mil on runescape. you see that amount in your inventory, but if you try to bank, use, or trade it, it wont work, because its just numbers. you see 5mil, but you still really have the smaller amount. if you had 50k, then the server knows you still have 50k, but cheat engine changed the number on your screen to make it look like you have 5mil. only you will see 5