The Playstation 3 is really on a roll when it comes to downloadable games on their PSN store. Most of them come in at $9.99, and I’ve spent more time playing some of them, especially the Pixeljunk games, than I have playing the ~$60 retail games. Today’s example of the awesome comes courtesy of the E3 tradeshow that’s currently going on – we’ll call this one ‘Gravitar Lives.’ If you’re a fan of old ~80′s arcade games it’s worth a look: