From what I'm reading, Chrono Trigger is worth $20 on the DS and should be less than $10 on the iPhone because they really messed up the controls. Console games do not translate well onto the iPad. It seems that games made FOR a tablet seem far more fun than games made FOR a console and ported. The virtual gamepad never seems to move quite the way that you wanted it to.
In any case, Chrono Trigger has to have a better story line than Infinity Blade II.
