Ninja Kids （1990）， a interesting ninjagame.

Ninja Kids is a side-scrolling action game produced by Taito Company in 1990. The four ninja boys have different ultimate moves, all of them are full-screen attacks. You can also get different props during the process of passing levels. Scrolls can be used to increase the power of ultimate moves, and Time Stop and Clones can effectively attack enemies. The attack ranges and special moves of the four ninja are very different. I prefer the first ninja with sword, which can attack far or near.