Loved XCOM, finally picked up the Vita version since it was just a few bucks. But it's literally unplayable, since the "Back" button functionality disappears when I enter the in-game menus after the first few missions? This has happened multiple times, with multiple "New Game"s and a re-install. Googling led me to a few threads complaining about this on other versions, but not much else...

Any help? Anyone else? And a warning I guess: seems broken :(

Answered my own question way back when the PS3 version first came out :) If you're having this problem, start a New Game & turn off the tutorial in the options. Should fix it~