Silpheed is a space shooter. You fly around and clear a route through enemy infested territory. It is a type of game we know too well today, but it was virtually unheard of in the days the game was released. So, strong marks for originality as well. What strikes me about the game is that, even though you get a fair warning (because of the angle in the game) before an enemy approaches you, the game is very difficult. You really have to do your best to stay alive. Although the best part of the game is picking up power boosts. They might be simple bonus scores, shield enhancers and so on. Another thing that makes this game so great is the ability to custom equip the ship before every mission (after the first one)!