Flower originally came out in 2009 on the PS3 (I think?). It is also available to play on Vita, and now on PS4. For $6.99, you can play the game on all of those consoles. Additionally, if you already had the game, you get it for free on PS4. I don't expect this to be the only PS3 game that'll be upgradable on PS4 for free (if you previously paid for it).
Graphics: Flower is an incredibly simplistic looking game -- the whole game will take up maybe 2GB on your hard drive. The best looking thing -- er, things -- in Flower are the blades of grass. The way they ripple in the wind is great. Secondly, the vibrance of all the colors along with the soothing feel of the pedals through the wind is incredibly relaxing. Anything else in the game doesn't look particularly good, but that's not a big loss. Flower isn't so much about the graphical detail as much as it is about the flow and color, which are both great. 4/5
Sound: I'd find it hard to believe that there's a more calming game out there. The music in this game is simplistic, but mesmerizing. If you used to take yoga or have thought about it, Flower should work just fine. The sound of the wind with the subtle music and notes that play every time you bloom a flower could lull you to sleep -- in a good way! 5/5
Control: Six-Axis is what you use to control the game. The only time you use a button is when you bloom your initial flower, start a level, or use the wind. The control from the start was pretty much perfectly fluid -- very responsive, and don't require massive movements. Using Six-Axis makes the game feel even more "floaty" and relaxing. 5/5
Fun: While the game is only about an hour long (yes, you read that right), it's a prime example of quality over quantity. I can tell you that the majority of the time while playing this game, I found myself so relaxed that my mouth was left open. If you're looking for a unique, fun experience to take up a portion of your day, Flower will more than likely entertain you more than an evening at the cinema would... and for a little less money.