You don't need PS+.yeah, that's BS. same BS as what killed xbox one's launch. what is sony thinking?!?
But you can't play without an internet connection, or if PSN is down or if the GT servers are down.
i know internet access is common place these days but i've had storms cause internet outages for a day or more before. fudge not being able to play my games due to a dumb internet requirement.
