Ninja JaJaMaru-kun

 is an action game released in Japan on November 15, 1985 by Jaleco for the Famicom and in 1986 for the MSX. The MSX version was released in Europe as "Ninja II", being marketed as a sequel to "Ninja-kun: Majou no Bouken", a game that used the name "Ninja" for its European MSX release.
The game was a commercial success, selling nearly units. An arcade video game port for the Nintendo Vs. System was released in April 1986. A remake, Ganso JaJaMaru-kun, was released in 1999 for the WonderSwan. "Ninja JaJaMaru-kun" was released for Nintendo's Japanese Virtual Console on December 26, 2006 and in PAL regions on September 21, 2007 as part of Ninja Week for the Hanabi Festival promotion. It was released on the North American Virtual Console on October 22, 2007 and was the first time the game released in the USA.
Gameplay.
In "Ninja JaJaMaru-kun", the player takes control of the titular character, who sets out to rescue Princess Sakura from the pirate lord Namazu Dayuu, or "Catfish Pirate". JaJaMaru can run, jump, and throw shurikens at enemies, all of which are taken from Japanese folklore and are introduced before a level begins. Each level has eight enemies total, who give chase to JaJaMaru if he occupies the same floor as them. Defeating enemies will cause their spirit to appear and ascend to the top of the screen, which can be grabbed for additional points. Once all the enemies are defeated, JaJaMaru moves onto the next level.
JaJaMaru can destroy bricks scattered in levels, some of which yield power-ups when destroyed. These include a cart that temporarily makes JaJaMaru invincible, a bottle that allows him to walk through enemies, a red ball that increases speed, coins that yield extra points, and 1UPs. Some bricks contain bombs which will kill JaJaMaru if he touches it. Collecting three different power-ups will summon a giant frog named Gamapa-kun, who JaJaMaru will ride and be completely invincible and be able to eat any nearby enemies. During levels, Sakura will sometimes drop flower petals that can be collected for points, while Namazu will drop deadly bombs. Collecting three petals will transport JaJaMaru to a bonus level, where he must throw shhurikens upward towards Namazu while avoiding his bombs. Bonus points are awarded for hitting Namazu, while hitting a bomb will send the player to the next level instead.
Development and release.
"Ninja JaJaMaru-kun" was developed and published by Jaleco for the Family Computer in Japan on November 18, 1985. The game is a spin-off of "Ninja-Kid" (1984), an arcade video game originally developed by Japanese company UPL, known for games such as "Atomic Robo Kid". Jaleco had previously ported the game to the Famicom in early 1985, and decided to re-use the Ninja-Kid character for their own home console game, now named "Ninja JaJaMaru-kun". The name is believed to come from the name of a character from the Japanese educational show "Okaasan to Issho", who was named "Fukurokouji JaJaMaru".
A Nintendo Vs. System port was released by Jaleco for arcades in April 1986. is a remake of "Ninja JaJaMaru-kun" released in Japan on April 15, 1999 by Jaleco for the WonderSwan. It is an enhanced version of the original Famicom game with better control, though it uses monochrome graphics due to being an original WonderSwan game.
Reception.
By April 1986, it had sold nearly units, becoming one of the best-selling Famicom games. In Japan, "Game Machine" listed "VS. Ninja JaJaMaru-kun" on their May 15, 1986 issue as being the fifteenth most-successful table arcade unit of the month.
Digital re-releases of "Ninja JaJaMaru-kun" have received a mediocre reception. "GameSpot" criticized the game for its simplicity and lacking in its gameplay, which they attributed to the lack of variety between levels and for the intelligence of the enemies remaining the same as the game progressed. While they praised the game for its easy-to-know controls and good music for an early point in the system's life, they said that it was a generally unappealing-looking game and that its gameplay was tedious and boring, mockingly commenting: ""Ninja Jajamaru-kun" is tedious and ugly, and it actually induces physical discomfort. You'd have to be crazy to dole out six dollars to subject yourself to this kind of pain". "Nintendo Life" was more positive towards the game, saying that its simplicity actually made the game fun to play. In light of this, they criticized its high difficulty level and repetitive soundtrack. They commented that the game was worth the purchase simply for the fact it had previously remained confined to Japan, but warned potential buyers of its overly-high difficulty. "IGN" said that, while cute, the game was "quaint at best", and that its simplistic gameplay and lack of a true progression through levels would easily bore players. They also felt confused towards the game's high price point, which they stated was needlessly-high and made it difficult to recommend.
In a 2011 retrospective review, "Hardcore Gaming 101" stated that while "Ninja JaJaMaru-kun" was a fun game, namely with the amount of ways to defeat the enemies, it suffered from choppy sprite animation and stiff controls, although claimed the latter was a significant improvement over the Family Computer port of "Ninja-Kid". They said that it had several cute touches, such as the Catfish Pirate laughing at the player at the beginning of each level, and that the music, while repetitive, was catchy and memorable. "Retro Gamer" called it "a primative, challenging Japanese platformer which becomes a bore quickly", criticizing the game's controls, simplicity, and for the gameplay being boring and lacking in variety. They also stated that its quality "has the feel of an NES arcade game port in a way", comparing it unfavorably to games like "Ghosts'n Goblins" and "Super Mario Bros.".