SEGA has announced Super Monkey Ball 2 for the iPhone (video above), with the games development company stressing it has many more games in development for the Apple mobile platform, a platform expected to account for 24 percent of portable game sales by 2014. Read onThat’s serendipitous to an extent, as a recent Research and Markets survey suggests the iPhone will drive future growth in the mobile gaming market. Analyst, David Cole, says. “Dedicated portable game systems from companies like Nintendo