Following the successful launch of an iPhone-based version of the company’s hit “Bejeweled,” game developer PopCap is admittedly interested in the iPhone as a gaming device. Up to 100,000 people have played the iPhone-based version of “Bejeweled,” which was launched on July 30 as a “proof-of-concept” and can be played for free by visiting the company’s website from the iPhone. “We don’t typically…