It's not hard to see that offering high-quality games through the cloud has its pitfalls, not the least of which is getting customers to pay. Square Enix may have licked that last problem through its new Coreonline web gaming service. Players can still pony up for the full-priced games or even single levels if they want unfettered access, but the cleverness comes through Coreonline's parking meter approach to ad-supported free play: the more ads you watch and the longer they run, the longer you'll get to play without spending a single coin. As our colleagues at Joystiq
