Many retailers have already marked them down, but today Sony made it official — God of War and Gran Turismo 4 have been inducted into the company's "Greatest Hits" program. As a result, both games will now sell for $19.99 brand-new.

If you haven't already bought them, check out our reviews of God of War and Gran Turismo 4 to figure out if you should add them to your collection.

You probably should.