Majou Densetsu II: Daimashikyou Galious

Majou Densetsu II: Daimashikyou Galious (魔城伝説II 大魔司教ガリウス) is a 1987 adventure game developed and published by Konami for the Famicom. It is a conversion of the second game in the Knightmare series for the MSX line of home computers. It is not an exact port, as it makes a number of changes over the original, including improved graphics and scrolling. It contains fewer dungeons, but each dungeon is considerably larger than those found in the original.

In the game, the player controls not one, but two characters who may alternate at the player's will. While the two characters, Popolon and Aphrodite, are nearly identical, they each contain an ability or two that the other does not, requiring the player to swap them at appropriate points in the game. The game is played in a large castle which contains entrances to five dungeons within the castle. Each dungeon contains a boss that must be defeated.

Although the MSX version of the game was translated and released outside of Japan in Europe, the Famicom version was never sold outside of Japan. However, in 1998, a translator known as Manipulate released a translation patch for the game which allows the game to be played by English speakers. The patch is available here.

Story
Popolon went into Mt. Atos to rescue Aphrodite kidnapped by Hudnos. But it was a trap made by Galious. He attacked the castle during Popolon's absence and also kidnapped and imprisoned a baby from heaven who was supposed to be born to Popolon and Aphrodite several years later.