In the 5th Invitation of the Nine, the Emissary makes reference to us (the Guardian) as having “incredible agency” and that we can “leave this game”. Byf’s video on this is really quite good and I would recommend watching it before continuing, but if you can’t be bothered I will restate some of what he says. This isn’t actually the first time Bungie has broken the 4th wall (acknowledged us, the player). That honour goes to the lore tab of the Skull of Dire Ahamkara which refers to us rather blatantly as “O player mine”. Using this and the Claws of Ahamkara tab in which the Ahamkara ask us to let them into our (the Players) thoughts, we can infer that Ahamkara are trying to make themselves more ‘real’ by entering the Players reality. Interesting, but not really the thing I want to talk about. For that we have to look at the Otherside exotic sparrow, which you can get as a random drop from strikes. It’s rare but no too rare, I’ve gotten about three or four since Warmind. Anyway, it’s tab talks about a perfect enemy on the otherside, which has the same intelligence, same experience and same abilities. It also mentions (and I feel this is key) that the unseen player on the otherside knows us so well they practically are us. I find this intriguing, because if you look at this tab with the idea that it is speaking to the Guardian, then the perfect enemy is us, the real us, the Player. We have the same experiences since we have played along with our Guardians ever since their first rez and we know them so well they practically are us; in a metaphorical sense, since you could call them personas or avatars. In terms of abilities it’s a bit harder to explain, but perhaps wonder about whose throwing those grenades. My idea of Bungie’s plan is this: the Destiny universe and ours exist in parallel, much like the many worlds theory in quantum physics. We can interact with, or watch that universe through our screens and through the Guardian, since we are their player on the otherside. The Ahamkara are aware of these other universes because of the nature of their wish powers and are trying to make themselves more powerful by expanding into other universes, including our own. However, because of the Guardians expanding power through the Sword logic (somewhat) they are getting dangerously close to realising this too, if they haven’t already, and might end up breaking through the universes as well. If true, I believe this is what the Emissary is referring to when she talks about the “game” and the Guardian being able to leave it. Or on a less interesting note, the Emissary could simply be referring to the ‘game’ between us, her, the Drifter, the Nine and the Queen. Though I wish someone would tell us the rules.