Popular Science writes: Ah, irony. A couple months ago we were celebrating breakthroughs in hyper-realistic video games. Now paying $60 seems extravagant for a single blockbuster title. But what about enjoying 10 downloadable alternatives for the same price? Faster connections, increasingly intuitive interfaces and ballooning value-priced software catalogues haven't just made digital game purchasing fiscally wise. They've also rendered it addictively simple.