Ninja Boy II (スーパーチャイニーズランド2 宇宙大冒険, Super Chinese Land 2 Uchū Dai-Bōken) is an action role-playing game for the Game Boy released in 1993 by Culture Brain.

In the previous game, the world has been saved and an intergalactic conference has been called.

Alien invaders came in and kidnapped all the dignitaries; declaring themselves to be the rulers of the entire galaxy in the process.

Ninja warriors Jack and Ryu must help the people of Futureland defeat the alien overlords by creating a spaceship from scratch.

Despite their intentions, Ryu and Jack must land at all the planets in order to repair the spaceship.