Easily the best feature they've added. The one the was without a doubt the most requested, and it's finally here. It's so nice not to have to play the same game as other people just to talk to your friends.
I would've said the Share button, but with no YouTube app it's still limited. Still a great feature nonetheless.
Hmm. Tough one. Part of me wants to say the picture taking/video recording/game broadcasting of the Share button simply because it's awesome to take pictures so easily. Another part of me wants to say Party Chat ,as it's made talking to a group of friends SO much easier and way more fun as you now don't have to be tied to a game (but you still can be if you want to).
I'd say Party Chat for now. When the Share features get improved functionality and data usage (like putting it straight to Youtube or onto a USB stick), then it MIGHT pass Party Chat. Other than that, Party Chat. I never really required it on my PS3, but seeing it now and how easy it is makes me not want to lose it in the future.
What's your favorite PS4 or PS4 feature that you really love?
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Party chat on the PS4, it needs to have a larger group than 8 though.
PS3 -- Free Online Play. This is why I bought any online multiplatform title for my PS3, rather than my Xbox 360.
PS4 -- Being able to Record / Stream video. I know gamers have been doing it for years with capture cards, but I never gave in and bought one. Instead, I would use a video camera to record my TV while I played. Now, I do not have to do that anymore, nor cave in a buy a capture card. Sure, the latter would give me more options, but the feature on the PS4 is good enough for what I'll need it for.