Cocoron is another Japanese Famicom title, sharing similar challenges in terms of readily available information as Cocona World. Without access to Japanese-language resources and historical game databases specialized in Japanese releases, definitively identifying the developer and publisher remains difficult.  Gameplay specifics are also hard to come by without dedicated research in Japanese-language sources. It's likely to be within genres common to the NES like platforming or adventure, but details remain obscure in publicly available English information.

Cocoron (Japan)

Cobra Triangle (Europe)