Playable space = non sky box (real geometry) That is not a lie to call that playable space. If you want a never ending explore-and-look-at-random-shit game, go play No Mans Sky. If you want a world filled with enemies and missions, then go play Destiny. Bungie put limits on their world to give you some purpose in your exploration. The fact that you want to go check out those rocks over rather than play the game they built for you is hilarious. Stop moaning and go play some Destiny.