PlayStation 4 Slim Console

Question: Can you download ps3 games from psn and playthen on the ps4
PlayStation Now is a game-streaming service that allows you to play PS3 games on PS4 over a Wi-Fi connection. It’s basically the Netflix of gaming, where you can play any title within the PlayStation Now library as long as you have fairly speedy Wi-Fi.
The benefits of this are that you won’t have to wait for the PS3 titles to install or update. All the PlayStation Now titles are stored in the online cloud, meaning all that boring stuff happens in the background.
All you need to do is download the PlayStation Now app from the PlayStation Network Store and make sure you’re packing a 5Mbps internet connection or faster.
Did not try! I do not see the point .
You need to have a subscription on "PlayStation Now". It is basically a streaming platform for ps4 and ps3 games. You can get a subscription from this link. https://www.playstation.com/en-us/explore/playstationnow/ You can also get a 7 day free trial if you want to.