If you've bought the original GOF2 the new one free. Buy the add ons for the special price of 4.99. I have found the new GOF2 HD very responsive on the quad-core tablets. Not as responsive on the dual-core. Great game with story and some shoot-them-ups. Earn credits buy update ship or improve the one you got. Only problem, I have trouble remembering where I've been - quite extensive.