Gradius is Konami's horizontal shoot 'em up series. Similar games are R-Type, Silpheed, Phalanx, Darius, In the Hunt, Z-Out, Einhander, and Katakis. Over the years, the Gradius series has spawned a decent amount of sequels. The original Gradius was released in 1985. In the Gradius saga, you pilot the most advanced starship known as the Vic Viper. This series has always put you up against hulking, difficult bosses and in the PS2 installment, Gradius 5, the developers went over board and decided to take Gradius to a whole new level of intense action. Konami has also made a parody series on Gradius known as Parodius.
What does Chancellor otto von bismarks quote blood and iron mean? By blood he means the deaths of wars and by iron he means the technology used in these wars like cannons, machine guns etc.. Edit
Some of the meanings are more obvious, while others have to be connected with the story and the placement of the rooms to make sense. For example, black symbolizes death and evil, and scarlet can symbolize blood. Black is often worn to funerals to represent the recent death, and red is the color of blood.