Do you have a PS3? Do you love old-school SRPGs (such as FFT)? If yes, you'll more than likely love Rainbow Moon. Going for only $15 with the potential for a hundred or so hours of entertainment, it is quite the steal.
SRPGs are right up my alley, and I am quite glad to have come across this gem. On top of that, I generally find the soundtrack to be absolutely beautiful; you can find a sample of it below:
The story isn't anything special, nor is there any real character development. However, the main focus of the game are the battles itself, and this is where the game really shines. You probably won't like the pace if you're used to high speed action/FPS games, but eventually it may grow on you.
The art style may put you off if you don't like colorful/cartoon graphics, but it will more than likely grow on you as well (I personally found it very aesthetically pleasing when I first played). There are a lot of old school mechanics in the game as well, such as the food and inventory/leveling system.
Even if you are a hardcore gamer, I would recommend starting off with the normal difficulty first, at least for the first few hours. Quite a bit of grinding is required to progress well with the hard difficulty (which you'll probably quite like if you're an old school gamer), and you won't be missing anything from playing the normal difficulty anyway.
As a bonus, you can download a bundle of quite a few generous pearls (used as stat points to upgrade with the Savant) and rainbow coins (the world's currency) from the playstation story for free. Additional pearl and rainbow coin boosts are also available for purchase, but these aren't required in the least; they're quite cheap anyway, if you feel that you need a bit of extra help.
If you're interested in the game, but still are on the fence with it; there is an excellent review available by ReviewZoneHD here:
I hope you find the game to be as enjoyable as I do!