These two games, Raystorm & Einhander are good shoot 'em ups. Raystorm suffers a little from sound glitches in the emulator however is still perfectly playable. Einhander runs fluid though. Both these are stunning games, with the difficulty level pitched just about right. I'd say Raystorm is the easier game of the two, but have only had around an hours play of both these. Well worth trying out.