Raiden 2, or if you prefer Raiden IIS Part B, is the second installment in the Raiden Trilogy. It picks up right off where Raiden 1 left off. Literally. You get a little cutscene just too: "Previously in Part A...". Raiden 2 plays very differently than Raiden 1 and Raiden X. You get a life bar like in Raiden 1 but the game takes place in outer space and the screen does not scroll in its normal manner. That said it is still very fun and of course the music gets an unprecedented A+++.