In the original game, "Hacking" referred to specific intended mechanics for character progression:

This unofficial version allows players to access almost every unit and event that existed during the game's live service.

Official online services for officially shut down on August 30, 2021 . Because the servers are no longer operational, standard "hacks" for online competitive play or currency generation are no longer applicable or functional.

However, the community has developed two primary ways to continue playing with "hacked" or modified content: 1. The SAO: MD Revival Project (Community Mod)