I pre-ordered once, and it was a mistake. My personal policy is never to buy anything in Early Access. I would name a game a failure for me only if it fails to grab my interest in the first couple of hours or if I do not get all my money's worth out of it. With the current money back policies of most digital outlets, it is easy to correct any judgement errors regarding expectations to enjoy a game. (Which has become another personal policy - never buy anything without a money back warranty).
