Maru's Mission

Maru's Mission Oira JaJaMaru! Sekai Daibōken
Japanese box art
Developer(s)	Tose
Publisher(s)	Jaleco
Series	Ninja Jajamaru
Platform(s)	Game Boy, 3DS Virtual Console
Release	Game Boy JP: September 28, 1990 NA: March 1991 3DS Virtual Console JP: January 18, 2012 NA: February 9, 2012
Genre(s)	Action
Mode(s)	Single-player

Maru's Mission is an action video game released in 1991 by Jaleco for the original Game Boy. It was released in Japan as Oira Jajamaru! Sekai Daibōken (おいらじゃじゃ丸！～世界大冒険～, "I'm Jajamaru! World Adventure") on September 28, 1990. The game was released to the Japanese 3DS Virtual Console in January 2012 and later in North America in February.

It is the first game from the Jajamaru series, aside from the loosely related Ninja Taro, to be released in North America, until the release of Ninja JaJaMaru-kun through the Virtual Console. The soundtrack, as well as many sprites and some cut-scenes of the North American version are different from the original Japanese.

Gameplay

Maru's girlfriend Cori is kidnapped and hidden in a secret location. The player is Maru, and moves through six levels based on various folklore monsters.

Worlds

1. North America: A forest
   • Mini boss: Eyeclops
   • Boss battle: Insector
2. Romania: First level is a desert. Second is a cemetery.
   • Mini boss: Wolfman
   • Boss battle: Dracula
3. Greece: An underground bone cavern
   • Mini boss: Golem
   • Boss battle: Medusa
4. Egypt: A desert
   • Mini boss: Sphinx
   • Boss battle: Isis
5. Brazil: First level is a mountain. Second is a cemetery.
   • Mini boss: Hydra
   • Boss battle: Kelbelos
6. Japan: A Ninja dojo
   • Mini boss: Nioh
   • Boss battle: Muramasa

Ninja JajaMaru: The Great World Adventure

In 2023 this game was re-released for the Game Boy Color in English with the name Ninja JajaMaru: The Great World Adventure.