Sony has been nice enough to give out a free Playstation Mobile game. In fact they'll be doing it every 7 days for the next 6 weeks. First game out is Samurai Beatdown. Please note that Playstation Mobile is not available everywhere. Simpy go to the Playstation Mobile section, and find the "Samurai BeatDown" game. It'll be free.
Source: Sony on Facebook.
(I got it from the UK Sony Facebook status, but it's also available for US PSN users. So check to see anyway.)