is your time machine. It is the humble, powerful, slightly intimidating tool that has allowed the PES community to thrive for over a decade.

Whether you are updating the Premier League kits to this season’s standards, bringing the FIFA World Cup scoreboard into the game, or finally fixing that one player who has had a generic face for too long—GGS is the key. It requires patience, a willingness to back up your files, and an eye for detail.

But once you boot up PES 2013, see the crisp stitching on a modern kit, and watch the lens flare bounce off a newly imported boot texture, you will realize: It was worth the effort. The beautiful game, preserved in digital eternity.