Konami today announced Metal Gear Ac!d 2 for the PSP, can't say I know much about the first one, but here's the juicy bit from the announcement anyway. Screenshots follow.

Metal Gear Ac!d 2 sees Snake taken captive by a man claiming to be an FBI agent. His captor coaxes Snake into infiltrating a top secret research facility, but is in fact a clever trap devised by the US Military and Venus, a female secret agent in charge of research and overseeing the creation of a third generation Metal Gear mechanoid system. As Snake attempts to defuse this potentially devastating project, he finds himself haunted by images from the past, and faces not only a wealth of tough adversaries, but his personal demons.

While the new game retains the popular card-based combat and movement system of its predecessor, Metal Gear Ac!d 2 enjoys a far more instinctive and comprehensive control system than that of the first game. Key advances include the ability to control Snake directly within 'Move' modes, while changing commands are now displayed in real-time to facilitate more rapid actions within action situations. This combines beautifully with a wider range of actions, too, with familiar Metal Gear moves such as slinging, crawling, and fighting now all accessible - and via the touch of a button.

Metag Gear Ac!d 2 PSP screenshots