This release of Atomic Robo-Kid is marked as the 'World' version, suggesting it was intended for distribution outside of Japan. It’s likely this version retains the core gameplay of the Japanese releases but may include modifications to cater to different markets, possibly including language and difficulty adjustments. The 'Type-2' specification points to the hardware/software revision. However, the actual developer remains unknown.

Atomic Robo-kid (World, Type-2)

Atomic Robo-kid (Japan, Type-2, set 1)