It kind of sucks how much this feature is getting over looked. I own both an X1 and PS4 and this feature here is easily one of my favorites. I don't do anything with my consoles but game so all the other features mean little to nothing to me.

This playgo feature is so great and I really appreciate how Sony realized this was critical and added it to the PS4. I'm guessing the X1 will never be able to do this which is sad cause games take forever to play on that system like it's not even funny how long it takes. I understand the 360/PS3 were the same but I've been spoiled by the PS4 big time.

That link is far from perfect but it does an adequate job explaining what PlayGo is.

I also love this feature. Much much better than the long install times the PS3 had to deal with.

It is one of the best next gen features to be honest...And only the PS4 does it right. Having to wait just seconds, and not 20+minutes to play a game.

Truly worth the 400$ alone. I have been waiting for this my whole life. Hated having to wait 10 minutes to DL stuff on the PS3.

You need to download and install the game first via digital that takes time... way more than 20-40 seconds.

the same feature is on digital downloads.

i bought infamous digitally.  i figured with the 20+ whatever Gb file it would take at least 15 mintues to be able to play it so a launch sound shapes.  by the time i loaded up my first level i was notified that infamous was ready to be played.   i nearly shit my pants. 

http://news.softpedia.com/news/Sony-PlayStation-4-s-PlayGo-Will-Increase-Digital-Content-Adoption-Rates-361923.shtml