PlayStation Now titles are playable on PS4 and PS3, PSVita, and PlayStation TV, as well as select Sony Blu-ray Disc players and now, Samsung TVs. Samsung, in case you didn’t notice, is the first non-Sony product to offer the service. Although, Sony plans for PlayStation Now to be available on more devices in the future.
Sony offers a free 7-day trial of the PlayStation Now service that’s available in either a $19.99 per month subscription or a three month subscription for $44.99 (a more economical $15 per month). You can see a full list of games available at this PlayStation community post.