A:AnswerTypically you have to download the game on the devices separately, but you can add them to all the devices library simultaneously. Also soon some games that work on the 3 may not work with previous gens
A:AnswerNo it will not have expandable storage so I recommend getting the 512 GB version. As for accessories you can purchase a case, elite headband, elite headband with battery, charging dock, silicone facial interface and active straps that go around your knuckles. You have a lot of accessories to choose from. Hope this helps.
A:AnswerTotally unleaked, but you can expect somewhere around 2 hours with no external battery packs. With the presumed elite strap with battery you can expect 4-5 hours.
A:AnswerEvery game is backwards compatible between the two headsets. Except for some future games that will be quest 3 exclusives due to the lack of performance on the quest 2.