Making the disk completion option optional for the limited version is not a bad idea. The differences are minor. There's no annoying "includes double-sided cover" label, and the book's interior depicts Seattle with a horse-riding Ellie. Even if it's a small thing, when you pay a premium for something, it's because you love the item or want to set yourself apart from others who also have it. I enjoyedably gave the game a passing grade of 9 out of 10, by the way.