Anarchy Online Hacks do things that let you have a huge advantage. Hacks can be done by changing the games files or by looking at packets that are sent and received. By changing the game files for example, you could buy any item from an npc, remove objects that are in your way or do small client side things. Packets for example control what you see and how your client reacts to the server. Changing these packets allow you to do things such as stopping your mana from going down so you can constantly use moves and not run out of resources.